President Donald Trump on Friday described a nail-biting decision to call off an imminent attack on Iran in order to avoid disproportionate casualties, but the account is already facing scrutiny from aides around him and military analysts questioning the sequence of events he laid out in tweets and statements.

Early in the day, the president said he called off the counterattack at the last minute because it would kill 150 people in retaliation for the downing of an unmanned surveillance drone. “We were cocked & loaded to retaliate last night on 3 different sights when I asked, how many will die,” he tweeted.

But administration officials said Trump was told earlier Thursday how many casualties could occur if a strike on Iran was carried out, and that he had given the green light to prepare for the operation Thursday morning.

The confusion reinforced concerns about the Trump administration’s credibility at a time when key U.S. allies are already questioning its narrative about Iran’s culpability for a recent spate of attacks on oil tankers.

The decision has divided his top advisers with senior Pentagon officials opposing the decision to strike and national security adviser John Bolton strongly supporting it.

Iran said Friday that the United States had “no justification” for a retaliatory strike and vowed to respond “firmly” to any U.S. military action.

Trump’s morning tweets appeared to gloss over the fact that he was the one, as commander in chief, who had ordered the retaliation against Iran in the first place.

Trump administration officials, who like others spoke on the condition of anonymity to discuss sensitive national security decisions, said the president approved the strikes after Iran’s Islamic Revolutionary Guard Corps earlier in the day shot down the Navy RQ-4 Global Hawk, a move Trump described as a “very big mistake.”

But he later changed his mind, the officials said.

The commander of the Revolutionary Guard’s aerospace division said Friday that Iran had sent “warnings” to the drone before shooting it down. In an interview with Iran’s state-controlled broadcaster, Brig. Gen. Amir Ali Hajizadeh said a final warning was sent at 3:55 a.m. local time Thursday.

“When it did not redirect its route and continued flying toward and into our territory, we had to shoot it at 4:05 a.m.,” he said. “Our national security is a red line.”

He said Iran refrained from also shooting down a U.S. P-8 patrol aircraft, with 35 people on board, that he asserted had accompanied the drone into Iranian airspace. His claim could not immediately be verified.

A senior U.S. defense official said Friday morning that the Pentagon had Navy assets poised to strike in Iran if directed, including ships accompanying the aircraft carrier USS Abraham Lincoln. Those attacks could have included airstrikes with jets, or — more likely — Tomahawk cruise missiles, the official said.

Trump’s initial tweets suggested that he had canceled his own order: “10 minutes before the strike I stopped it,” he said. But in an interview with NBC’s Chuck Todd for “Meet the Press,” the president said he hadn’t given final approval to any strikes and that no planes were in the air.

“Nothing was green lighted until the very end because things change,” Trump said in the interview.

In his Twitter posts Friday morning, Trump wrote that “sanctions are biting & more added last night.” However, the Treasury Department did not add any new sanctions against Iran on Thursday night.

There was also confusion about how the United States and Iran were communicating during the crisis at a time when the two adversaries have very few diplomatic contacts.

The Reuters news agency reported Friday that Iranian officials said they received a message from Trump through Oman overnight warning that a U.S. attack was imminent.

When asked about the report, a senior U.S. administration official said the United States never sent a message to Iran via the Omanis. The country at the eastern corner of the Arabian Peninsula has long been an interlocutor between the West and Iran, but not on this occasion, the official said.

“It is a complete lie and propaganda from Iran,” the official said.

Earlier Friday, the head of Iranian media services also told NBC News that the Reuters report was inaccurate. He said such a message from the United States was never sent and the content of the messages is also false.

The Federal Aviation Administration late Thursday barred U.S.-registered aircraft from operating over the Persian Gulf and Gulf of Oman, due to an increase in military activities and political tensions that it said might “place commercial flights at risk.”

Several U.S. and international carriers said that they had either canceled flights over Iranian airspace or were taking steps to avoid the Strait of Hormuz.

The day’s events have left lawmakers in both parties confused about whether the United States remains on the precipice of a military conflict or if an imminent crisis had been averted.

House Speaker Nancy Pelosi, D-Calif., said Friday that she was not informed of Trump’s plans to strike Iran but described the latest events as a “dangerous, high-tension situation.”

While Senate Majority Leader Mitch McConnell, R-Ky., expressed confidence in the president, several hawks in Congress said the only appropriate response would be a swift military counter-strike.

“They’re trying to break our will and intimidate us to come to the negotiating table,” Sen. Lindsey Graham, R-S.C., said of the Iranians.

Trump’s comments on Thursday also left room for questions about how his administration planned to respond to Iran. Immediately following the drone’s downing, he tweeted that “Iran made a mistake.”

But Trump said he found it “hard to believe” that the attack on the drone “was intentional” on the part of Iran’s top officials. He also noted that the aircraft was unmanned. “There was no man or woman in it,” he said. “It would have made a big difference” if a plane carrying people had been shot down. “It would have made a big, big difference.”

Iran’s strike on the U.S. drone Thursday followed a number of recent incidents, including attacks on tankers, that American officials have depicted as part of an Iranian effort to hurt the United States and its allies in the region. The United States has continued its “maximum pressure” campaign against a country the Trump administration has identified as its main adversary in the Middle East.

Tehran has responded with defiance to the campaign, which was launched after Trump withdrew the United States from the 2015 Iran nuclear deal and has included designating the Revolutionary Guard as a terrorist group and taking steps to cut off Iranian oil sales.

On Thursday, the European Union said officials from Germany, Britain, France, Russia, China and Iran would meet next week to discuss strategies to salvage the nuclear pact despite renewed U.S. sanctions and Tehran’s threat to exceed limits on its uranium stockpiles.

Saudi Arabia’s deputy defense minister said Friday on Twitter that he met with Brian Hook, the State Department’s special representative for Iran, in Riyadh “to explore the latest efforts to counter hostile Iranian acts.”

Hook called Friday for measures to “de-escalate” the tense situation with Iran. He told a news conference in the Saudi capital, “Our diplomacy does not give Iran the right to respond with military force; Iran needs to meet our diplomacy with diplomacy and not military force,” Reuters reported. “It’s important we do everything we can to de-escalate.”

The Revolutionary Guard’s top commander, Maj. Gen. Hossein Salami, called the downing of the drone “a clear message to America.”

The done incident occurred the week after two tankers, one Japanese and one Norwegian, were attacked in the Gulf of Oman. The Trump administration has blamed Iran for both incidents, at least one of which is said to have been carried out by use of limpet mine similar to devices previously displayed at Iranian military parades. Iran has denied involvement, calling the accusation “a lie.”

The tanker incidents were similar to an attack on a tanker off the United Arab Emirates in May. The U.S. military also accused Iran of firing a modified SA-7 surface-to-air missile at an MQ-9 Reaper drone over the Gulf of Oman as it surveilled the attack on the Japanese ship.

Also this month, Centcom said Houthi rebels shot down an MQ-9 over Yemen using an SA-6 surface-to-air missile in an attack that “was enabled by Iranian assistance.”

The latest incident came just days before acting defense secretary Patrick Shanahan was due to step down. Shanahan, who this week withdrew from his confirmation process after news media, including The Washington Post, published reports about past family strife, is handing responsibility for the military to Mark Esper, who now serves as Army secretary.

It is unclear how the turnover at the top of the Pentagon will affect an internal debate about how to respond to what officials say is an attempt to strike American interests. Some defense officials have voiced concerns that officials led by national security adviser John Bolton, who has publicly advocated regime change in Iran in the past, may be creating conditions in which war is inevitable.

Trump has previously authorized targeted strikes in the Middle East, including on government-controlled air bases in Syria. He was elected in 2016 promising to end American involvement in conflicts in the region.

At the same time, the Pentagon remains concerned about the potential for Iranian attacks on U.S. military personnel, especially those stationed in Iraq. During a visit to Baghdad last month, Secretary of State Mike Pompeo sought to relay a message for Iranian leaders that even one American death would result in a U.S. counterattack.

A U.S. official, speaking on the condition of anonymity, said U.S. naval assets were trying to recover pieces of the drone.

The strike on the RQ-4 is much more significant than the recent attacks on Reapers. Each Global Hawk, which has a wingspan of 131 feet, is worth more than $100 million and is packed with sensors and able to fly at altitudes of more than 55,000 feet to observe broad areas for periods that can stretch longer than a day.

The Global Hawk downed on Thursday was an older “demonstrator” model, according to another U.S. official, that had been transferred from the Air Force to the Navy to carry out a mission known as Broad Area Maritime Surveillance. The Pentagon has since begun testing a newer cousin, the MQ-4C Triton. Neither version carries weapons.

Hudson and Ryan reported from Washington. Cunningham reported from Dubai. The Washington Post’s Josh Dawsey, Dan Lamothe, William Branigin, Damian Paletta, and Karoun Demirjian in Washington contributed to this report. </s> President Donald Trump said Friday that he called off an attack on Iran just as the US was "cocked & loaded" to strike because he decided there would be too many deaths for a proportionate response to the downing of a US drone earlier this week.

"We were cocked & loaded to retaliate last night on 3 different sights (sic) when I asked, how many will die. 150 people, sir, was the answer from a General," Trump tweeted. "10 minutes before the strike I stopped it."

Causing so many casualties, Trump tweeted, would not have been "proportionate to shooting down an unmanned drone."

Trump added that he is in "no hurry," touted the US military as "by far the best in the world" and said he had imposed new sanctions against Iran "last night."

It was unclear what sanctions Trump was referring to. CNN has reached out to the Treasury Department and National Security Council for comment. It's also unclear why the President only learned of the casualty estimates after he had first ordered the attack and minutes before the US strikes were to hit their targets.

The US has been in a standoff with Iran, with US military or diplomatic responses having the potential to provoke further escalation from Tehran. Iran's downing of the drone earlier Thursday has left the President caught between Republicans demanding a response and congressional Democrats warning that Trump -- and the Iran policy hardliners on his national security staff, who welcome the confrontation -- could lose control of the situation and lead the US into war.

The US military targets were a limited set of Iranian radars and missile batteries, said a US official with direct knowledge of the matter, who spoke on the condition of anonymity because of the sensitivity of the information. No US weapons had been launched when the decision was made to call off the strikes, which were first reported by The New York Times.

Military and diplomatic officials were expecting a strike as late as 7 p.m. ET on Thursday after intense debate among Trump's top national security officials and congressional leaders at the White House, multiple senior administration officials involved in or briefed on the deliberations told the Times. The strike had been scheduled for just before dawn on Friday in Iran to minimize the risk to civilians and the Iranian military, and military officials received word shortly after then that the strike was off, at least temporarily, the Times reported.

On Friday, Seyed Abbas Mousavi, a spokesman for Iran's Foreign Ministry said his country "responds to diplomacy with diplomacy, respect with respect, and to war with decisive defense."

Earlier Thursday, before the reports surfaced, a senior White House official told CNN that Trump and national security adviser John Bolton were engaged in an ongoing debate about how to handle Iran.

Trump had moved to ease tensions with Tehran by striking a starkly different tone from Bolton and other senior security aides. Calling the shootdown "a new wrinkle, a new fly in the ointment," Trump told reporters in the Oval Office he finds it "hard to believe it was intentional."

Earlier in the day, Trump had tweeted that "Iran made a very big mistake!" as he and his national security officials huddled to weigh possible responses. Some lawmakers called for restraint and others warned Iran should prepare for "severe pain."

Retired Army Lt. Gen. Mark Hertling, a CNN military analyst, told CNN's Don Lemon Thursday on "CNN Tonight" that disagreement within the administration about whether to attack is not unusual for a White House.

"That's something that occurs at any strategic decision level," Hertling said, "when you're mitigating risk or you're attempting to understand what the risk might be based on the processes of war gaming and determining what your objectives are."

The US claims the drone was in international airspace over the Strait of Hormuz, one of the world's most vital shipping routes, while Iran says the drone was over its territory.

Iran's Islamic Revolutionary Guards Corps on Friday released the first images of what it says are pieces of the drone, state media outlet IRIB reported.

Amir Ali Hajizadeh, the commander of the aerospace force of the Islamic Revolutionary Guard Corps, said some parts of the downed American drone were recovered from Iranian territorial waters near the Kooh Mubarak area, Iran's Tasnim news agency reports. He said the drone was issued a final warning 10 minutes before it was downed.

Earlier Thursday, the Federal Aviation Administration issued a notice that it was prohibiting US flights over the Persian Gulf and Gulf of Oman due to rising tensions. Airlines that operate flights in the region said Friday that they would adjust their operations.

Reports of the aborted attack drew swift reaction from Democrats angling to challenge Trump in 2020.

Democratic Sen. Elizabeth Warren of Massachusetts tweeted that "there is no justification" for escalating tensions with Iran.

"Donald Trump promised to bring our troops home. Instead he has pulled out of a deal that was working and instigated another unnecessary conflict," she wrote. "There is no justification for further escalating this crisis -- we need to step back from the brink of war."

Rep. Tulsi Gabbard of Hawaii, an Iraq War veteran, tweeted that war with Iran is "HIGHLY likely unless Trump swallows his pride & returns to the Iran nuclear agreement he tore up," referring to the Obama-era pact. </s> U.S. President Donald Trump said on Friday he aborted a military strike to retaliate for Iran's downing of an unmanned U.S. drone because it could have killed 150 people, and signaled he was open to talks with Tehran.

An Iranian surface-to-air missile destroyed a U.S. Global Hawk surveillance drone on Thursday. Tehran said the drone was shot down over its territory and Washington said it occurred in international airspace over the Strait of Hormuz.

The incident aggravated fears of a direct military clash between the longtime foes. Oil futures rose more than 1% to above $65 per barrel on Friday over worries about possible disruptions to crude exports from the Gulf.

Trump's decision to cancel what he said was a planned attack on three sites suggests he wants a diplomatic solution to end weeks of festering tensions with Iran, which Washington accuses of a spate of attacks on oil tankers in the Gulf region.

"I'm not looking for war, and if there is, it'll be obliteration like you've never seen before. But I'm not looking to do that," Trump told NBC News in an interview aired on Friday night.

Iranian sources told Reuters that Trump had warned Tehran via Oman that a U.S. attack was imminent, but had said he was against war and wanted talks. Washington also requested a closed-door U.N. Security Council meeting on Monday.

The State Department denied the Reuters report. "Reports that a message was passed last night to the Iranians via an Omani back channel are completely false. These reports are pure Iranian propoganda," department spokeswoman Morgan Ortagus said on Twitter.

In a series of early-morning tweets, Trump said he was in no hurry to launch a strike and that U.S. economic sanctions designed to force Iran to curb its nuclear and missile programs and its involvement in regional wars were having an effect.

"We were cocked & loaded to retaliate last night," Trump tweeted.

"Ten minutes before the strike I stopped it, not proportionate to shooting down an unmanned drone. I am in no hurry, our military is rebuilt, new, and ready to go, by far the best in the world," Trump tweeted.

Typically, the U.S. military would seek to target Iranian facilities that could be connected to the shooting down of the American drone. The military would not seek to inflict casualties and although Iranian military casualties could occur in an attack, forecasts such as 150 are normally only rough estimates.

White House national security adviser John Bolton, Secretary of State Mike Pompeo and CIA Director Gina Haspel, along with the rest of Trump's team, favored a retaliatory strike, a senior Trump administration official said.

"There was complete unanimity amongst the president's advisers and DOD (Department of Defense) leadership on an appropriate response to Iran's activities. The president made the final decision," said the official.

Trump's decision drew mixed reviews in Washington, with some people criticizing him for flinching while others, notably senior Democrats, praised what they saw as restraint.

"A strike of that amount of collateral damage would be very provocative, and I'm glad the president did not take that," House Speaker Nancy Pelosi, the top Democrat in Congress, told reporters.

However, Michael Makovsky, a former Pentagon official who heads the Jewish Institute for National Security of America, a think tank that favors strong U.S.-Israeli security ties, said Trump was undermining U.S. credibility.

"Trump has given the impression he lost his nerve," Makovsky said in a statement.

Iran's destruction of the U.S. drone was the latest among ever more serious incidents in the Gulf region, a critical artery for global oil supplies, since mid-May.

There have also been explosions on six oil tankers that the U.S. suspects Iran or its proxies of carrying out. Iran has denied any involvement.

After interviewing Trump for NBC's "Meet the Press" program, NBC correspondent Chuck Todd said Trump had said he had no preconditions for talks with Iran and was willing to speak to Iranian President Hassan Rouhani or Supreme Leader Ayatollah Ali Khamenei.

U.S. forces are preparing to evacuate nearly 400 people working for Lockheed Martin Corp and Sallyport Global from an Iraqi military base north of Baghdad over potential security threats, Iraqi military sources said on Friday.

The sources did not give any details about the threats. Three bases hosting U.S. forces in Iraq have been attacked in the past week with no claims of responsibility. Local officials blamed Iran-backed Shi'ite militias for one of the incidents.

Trump on Friday spoke with Saudi Crown Prince Mohammed bin Salman about Middle East stability and the oil market, the White House said.

German Chancellor Angela Merkel said on Friday she and fellow EU leaders "are concerned about the situation and support diplomatic negotiations, a political solution for a very tense situation."

Some global airlines are re-routing flights to avoid Iran-controlled airspace over the Strait of Hormuz and Gulf of Oman, they said on Friday after the U.S. Federal Aviation Administration barred U.S. air carriers from the area.

News of the Trump message to Iran, delivered through Oman overnight, broke shortly after the New York Times reported that Trump had called off air strikes targeting Iranian radar and missile batteries at the last minute.

"In his message, Trump said he was against any war with Iran and wanted to talk to Tehran about various issues," one Iranian official told Reuters, speaking on condition of anonymity.

"He gave a short period of time to get our response, but Iran's immediate response was that it is up to Supreme Leader Khamenei to decide about this issue."

A second Iranian official said: "We made it clear that the leader is against any talks, but the message will be conveyed to him to make a decision.

"However, we told the Omani official that any attack against Iran will have regional and international consequences."

Khamenei has the last say on all state matters and has ruled out any talks with Washington while Tehran is under sanctions.

Trump's decision in May to tighten sanctions to try to eliminate Iran's oil exports led to the latest tensions. In May 2018, Trump unilaterally withdrew Washington from a 2015 accord between Iran and major powers under which Tehran curtailed its path to building a nuclear bomb in return for sanctions relief.

Mike Pompeo visit to India: US secretary of state will assure India on H-1B visa cap, says official

India becomes investment darling for sovereign wealth and pension funds as US-China trade war deepens </s> US President Donald Trump reportedly approved a missile strike on Iran but changed his mind while the planes were in the air.

Trump allegedly made the decision following an intense meeting at the White House involving national security top brass. It was made in response to Iran shooting down a US done on Thursday. However, Trump was said to have backed down on the decision following advice from Secretary of State Mike Pompeo and John Bolton, according to sources. At this stage, it is not yet known why the president reversed the action.

It comes just a day after Trump launched his reelection campaign in Florida. During a speech at the event, he warned that Iran had made 'a very big mistake' by shooting down the drone. When asked by a reporter if he planned a retaliatory strike against Iran, Trump said: "You'll soon find out". At a subsequent press conference, the 45th President of the United States again addressed the issue, saying that he did not believe Iran's actions were intentional.

The averted strike was in response to the downing of the surveillance RQ-4 Global Hawk which Iran says was flying in its airspace - a claim the US denied. Tensions have been rising between the two states since Trump's administration accused Tehran of attacking tankers in the Gulf last week. The Revolutionary Guard said: "It was shot down when it entered Iran's airspace near the Kouhmobarak district in the south." Brigadier General Hossein Salami, commander in chief of the Revolutionary Guards, warned against any further aggression and claimed the drone's downing carried a "clear message" to Iran's arch-enemy - the US.

He added: "We do not intend to engage in war with any country, but we are completely ready for the war." The US military said the drone was shot down 17 miles from Iran. Navy Captain Bill Urban, a spokesman for the US military's Central Command, claimed no US aircraft were flying over Iran. He said: "Iranian reports that the aircraft was over Iran are false. This was an unprovoked attack on a US surveillance asset in international airspace." </s> Trump confirms he called off attack on Iran, citing potential casualties

DUBAI, United Arab Emirates - President Donald Trump ordered an attack on Iran on Thursday in retaliation for the downing of a surveillance drone in the Strait of Hormuz but called the operation off just before it was due to occur because it would have caused extensive casualties, he said Friday.

In a series of morning tweets, Trump said he called off strikes on three Iranian sites minutes before they were to be launched because he was informed of the likely loss of life among Iranians.

"We were cocked & loaded to retaliate last night on 3 different sights when I asked, how many will die," Trump tweeted. "150 people, sir, was the answer from a General. 10 minutes before the strike I stopped it."

Such a death toll was "not proportionate to shooting down an unmanned drone," Trump wrote, adding: "I am in no hurry, our Military is rebuilt, new, and ready to go, by far the best in the world. Sanctions are biting & more added last night. Iran can NEVER have Nuclear Weapons, not against the USA, and not against the WORLD!"

Iran said Friday the United States had "no justification" for a retaliatory strike and vowed to respond "firmly" to any U.S. military action.

Trump administration officials, who spoke on the condition of anonymity to discuss sensitive national security decisions, said the president approved the strikes after Iran's Islamic Revolutionary Guard Corps earlier in the day shot down a Navy RQ-4 Global Hawk operating off Iran's southern coast, a move Trump described as a "very big mistake."

But he later changed his mind, the officials said. The decision was first reported by the New York Times.

Trump's Friday morning tweets appeared to gloss over the fact that he was the one, as commander in chief, who had ordered the retaliatory strike against Iran in the first place.

The commander of the Revolutionary Guard's aerospace division said Friday that Iran had sent "warnings" to the drone before shooting it down. In an interview with Iran's state-controlled broadcaster, Brig. Gen. Amir Ali Hajizadeh said a final warning was sent at 3:55 a.m. local time Thursday.

"When it did not redirect its route and continued flying toward and into our territory, we had to shoot it at 4:05 a.m.," he said. "Our national security is a red line."

He also said that a U.S. P-8 patrol aircraft, with 35 people on board, had accompanied the drone into Iranian airspace. His claim could not immediately be verified.

"We could have downed it, too," Hajizadeh said of the plane, the Fars News Agency reported. "But we did not do it."

Iranian state television Friday published images that it said showed pieces of the drone recovered from the debris field. The photographs, which showed large fragments of what appeared to be an aircraft, could not be independently authenticated.

Iranian officials told the Reuters news agency Friday that Tehran received a message from Trump through Oman overnight warning that a U.S. attack was imminent.

"Trump said he was against any war with Iran and wanted to talk to Tehran about various issues," Reuters quoted one official as saying. "He gave a short period of time to get our response." The official added that it was up to Iran's supreme leader, Ayatollah Ali Khamenei, to decide whether to respond.

Iran's permanent mission to the United Nations did not immediately reply to request for comment.

The Federal Aviation Administration late Thursday barred U.S.-registered aircraft from operating over the Persian Gulf and Gulf of Oman, due to an increase in military activities and political tensions that it said might "place commercial flights at risk."

Several U.S. and international carriers said that they had either canceled flights over Iranian airspace or were taking steps to avoid the Strait of Hormuz.

The aborted operation to strike Iran capped a day in which news of the drone's downing heaped fuel on already heightened fears that the United States and Iran were on a course toward a military conflict as each side blamed the other for the incident.

Tehran and Washington gave conflicting accounts of what occurred when the drone with an airliner's wingspan crashed into the sea. While Iran said the aircraft had entered its airspace, the U.S. Central Command denied that assertion, characterizing the incident as an "unprovoked attack" over one of the world's most important commercial waterways.

In remarks alongside visiting Canadian Prime Minister Justin Trudeau at the White House, Trump condemned the shoot-down but also appeared to tamp down speculation that a counterstrike might be in the works, saying the drone may have been shot down without the knowledge of Iranian leaders.

"I'm not just talking about the country made a mistake. I'm talking about somebody under the command of that country made a mistake," Trump said at the White House. "I find it hard to believe it was intentional" on the part of Iran's top officials, the president said.

Trump was noncommittal about a U.S. counterattack. "Let's see what happens," he said. "This is a new fly in the ointment - what happened, shooting down the drone - and this country will not stand for it."

The White House invited a bipartisan group of top congressional leaders to a meeting Thursday afternoon to discuss the situation.

Among those invited were Senate Majority Leader Mitch McConnell, R-Ky., House Speaker Nancy Pelosi, D-Calif., Senate Minority Leader Chuck Schumer, D-N.Y., House Minority Leader Kevin McCarthy, R-Calif., and the chairmen and ranking minority party members of the House and Senate Intelligence and Armed Services committees.

"We had a good briefing," McConnell said, adding that he could confirm that an unmanned aerial vehicle "was fired on from Iranian soil and it was in international waters. And beyond that I think the administration is engaged in what I would call measured responses."

Schumer said he cautioned that "these conflicts have a way of escalating."

"The president may not intend to go to war here, but we're worried that he and the administration may bumble into a war," he said. "One of the best ways to avoid bumbling into war, a war that nobody wants, is to have a robust open debate and for Congress to have a real say. We learned that lesson in the run-up to Iraq" in 2003.

After the White House meeting, Pelosi held a closed-door session with Democratic lawmakers to brief them on the developments. "We know that the high-tension wires are up there, and we must do everything we can not to escalate the situation, but also to make sure that our personnel in the region are safe," she said.

Thursday's strike followed a number of recent incidents, including attacks on oil tankers, that American officials have depicted as part of an Iranian effort to hurt the United States and its allies in the region. The United States has continued its "maximum pressure" campaign against a country the Trump administration has identified as its main adversary in the Middle East.

Tehran has responded with defiance to the campaign, which was launched after Trump withdrew the United States from the 2015 Iran nuclear deal and has included designating the Revolutionary Guard as a terrorist group and taking steps to cut off Iranian oil sales.

On Thursday, the European Union said officials from Germany, Britain, France, Russia, China and Iran would meet next week to discuss strategies to salvage the nuclear pact despite renewed U.S. sanctions and Tehran's threat to exceed limits on its uranium stockpiles.

Saudi Arabia's deputy defense minister said Friday on Twitter that he met with Brian Hook, the State Department's special representative for Iran, in Riyadh "to explore the latest efforts to counter hostile Iranian acts."

The Revolutionary Guard's top commander, Maj. Gen. Hossein Salami, called the downing of the drone "a clear message to America."

"Our borders are Iran's red line, and we will react strongly against any aggression," Salami said in remarks carried by Iranian state television. "Iran is not seeking war with any country, but we are fully prepared to defend Iran."

Nearly a quarter of the world's traded oil passes through the Strait of Hormuz, which connects Middle East energy producers to markets around the globe.

Lt. Gen. Joseph Guastella, head of U.S. air forces in the Middle East, told reporters at the Pentagon that the Global Hawk was flying at high altitude in the vicinity of recent tanker attacks and was not at any time any closer than 21 miles to the nearest point on Iran's coast.

Guastella said the aircraft did not leave international airspace and was brought down by a Republican Guard surface-to-air missile fired from an area close to Goruk, Iran.

"This dangerous and escalatory attack was irresponsible and occurred in the vicinity of established air corridors between Dubai, UAE, and Muscat, Oman, possibly endangering innocent civilians," he said. Guastella did not take questions, and the Pentagon did not make anyone else available to discuss the tensions.

The Global Hawk incident occurred the week after two tankers, one Japanese and one Norwegian, were attacked in the Gulf of Oman. The Trump administration has blamed Iran for both incidents, at least one of which is said to have been carried out by use of limpet mine similar to devices previously displayed at Iranian military parades. Iran has denied involvement, calling the accusation "a lie."

The tanker incidents were similar to an attack on a tanker off the United Arab Emirates in May. The U.S. military also accused Iran of firing a modified SA-7 surface-to-air missile at an MQ-9 Reaper drone over the Gulf of Oman as it surveilled the attack on the Japanese ship.

Also this month, Centcom said Houthi rebels shot down an MQ-9 over Yemen using an SA-6 surface-to-air missile in an attack that "was enabled by Iranian assistance."

The latest incident came just days before acting defense secretary Patrick Shanahan was due to step down. Shanahan, who this week withdrew from his confirmation process after news media, including The Washington Post, published reports about past family strife, is handing responsibility for the military to Mark Esper, who now serves as Army secretary.

It is unclear how the turnover at the top of the Pentagon will affect an internal debate about how to respond to what officials say is an attempt to strike American interests. Some defense officials have voiced concerns that officials led by national security adviser John Bolton, who has publicly advocated regime change in Iran in the past, may be creating conditions in which war is inevitable.

Trump has previously authorized targeted strikes in the Middle East, including on government-controlled air bases in Syria. He was elected in 2016 promising to end American involvement in conflicts in the region.

At the same time, the Pentagon remains concerned about the potential for Iranian attacks on U.S. military personnel, especially those stationed in Iraq. During a visit to Baghdad last month, Secretary of State Mike Pompeo sought to relay a message for Iranian leaders that even one American death would result in a U.S. counterattack.

Trump appeared to tamp down the likelihood of an immediate military response as he highlighted the fact that the Global Hawk was unmanned. "We had nobody in the drone," he said. "It would have made a big difference, let me tell you."

Sen. Lindsey Graham, R-S.C., tweeted, "When it comes to the Middle East, there are seldom good choices."

"But in some instances, failing to act can prove to be the most dangerous choice of all," he said.

A U.S. official, speaking on the condition of anonymity, said U.S. naval assets were trying to recover pieces of the drone.

The strike on the RQ-4 is much more significant than the recent attacks on Reapers. Each Global Hawk, which has a wingspan of 131 feet, is worth more than $100 million and is packed with sensors and able to fly at altitudes of more than 55,000 feet to observe broad areas for periods that can stretch longer than a day.

The Global Hawk downed on Thursday was an older "demonstrator" model, according to another U.S. official, that had been transferred from the Air Force to the Navy to carry out a mission known as Broad Area Maritime Surveillance. The Pentagon has since begun testing a newer cousin, the MQ-4C Triton. Neither version carries weapons.

According to a Republican Guard statement, the U.S. drone took off from a base in the "southern Persian Gulf" and was heading toward Iran's Chabahar port "in full secrecy, violating the rules of international aviation."

"While returning to the western Hormuz Strait's region, the drone violated Iran's airspace and engaged in information-gathering and spying," the statement said.

At its narrowest, the Strait of Hormuz is just 21 nautical miles wide, and ships passing through it must enter the territorial waters of Iran and Oman. Under the rule of the shah in 1959, Iran extended its territorial waters to 12 nautical miles and declared that it would recognize only "innocent passage" through the area, essentially excluding warships engaging in activities deemed hostile. Oman also claimed a 12-mile territorial limit in 1972 and later demanded that foreign warships obtain permission to pass through its waters.

The United States does not recognize any restrictions on transit through the strait. </s> Washington — US President Donald Trump said on Friday he had aborted a military strike on Iran because such a response to Tehran's downing of an unpiloted US surveillance drone would have caused a disproportionate loss of life.

In a series of early morning tweets, Trump said US economic sanctions against Iran were having an effect and more were imposed late on Thursday following the destruction of the US drone by an Iranian surface-to-air missile.

Trump said the plan was to hit three different sites in response to the drone's downing, and that he was told 150 people would have died.

"Ten minutes before the strike I stopped it, not proportionate to shooting down an unmanned drone. I am in no hurry, our military is rebuilt, new, and ready to go, by far the best in the world," Trump tweeted.

Earlier on Friday, Iranian officials said that Tehran had received a message from Trump warning that a US attack on Iran was imminent but saying that he was against war and wanted talks on a range of issues.

News of that message, delivered through Oman overnight, came shortly after the New York Times reported that Trump had called off air strikes targeting Iranian radar and missile batteries at the last minute.

"In his message, Trump said he was against any war with Iran and wanted to talk to Tehran about various issues," one of the officials said, speaking on condition of anonymity.

"He gave a short period of time to get our response but Iran's immediate response was that it is up to Supreme Leader [Ayatollah Ali] Khamenei to decide about this issue."

A second Iranian official said: "We made it clear that the leader is against any talks, but the message will be conveyed to him to make a decision. However, we told the Omani official that any attack against Iran will have regional and international consequences."

Khamenei has the last say on all state matters and has ruled out any talks with Washington while Tehran is under sanctions.

Iran shot down the drone after weeks of festering tension amid a spate of attacks on oil tankers in the Gulf region.

In his initial response on Thursday, Trump said he was not eager to escalate a stand-off with Iran over its nuclear and ballistic missile activities and support for proxies in various Middle East conflicts.

He said the unpiloted drone might have been shot down in error by someone who was acting "loose and stupid", though added: "This country will not stand for it."

The incident aggravated global fears of direct military confrontation between the longtime foes, and oil prices rose a further $1 per barrel to above $65.50 on Friday due to worries about possible disruptions to crude exports from the Gulf. </s> US President Donald Trump said on Friday he aborted a military strike on Iran because he it could have killed 150 people, a disproportionate response to Tehran’s downing of an unmanned US surveillance drone, Reuters reports.

Trump said the plan was to hit three different sites in response to the drone’s downing on Thursday, which Tehran said took place over its territory and which Washington said occurred in international airspace over the Strait of Hormuz.

The drone incident aggravated fears of direct military confrontation between the longtime foes, and oil prices rose a further $1 per barrel to above $65.50 on Friday due to worries about possible disruptions to crude exports from the Gulf.

In a series of early morning tweets, Trump said he was in no hurry to launch a strike and that US economic sanctions designed to force Iran to curb its nuclear and missile programs and its involvement in regional wars were having an effect.

He also said the United States imposed additional sanctions against Iran on Thursday night following the destruction of the Global Hawk drone by an Iranian surface-to-air missile, but it was not immediately clear what those economic penalties may have been.

READ: Trump makes sudden U-turn and calls off military strike on Iran

“Ten minutes before the strike I stopped it, not proportionate to shooting down an unmanned drone. I am in no hurry, our military is rebuilt, new, and ready to go, by far the best in the world,” Trump tweeted.

White House national security adviser John Bolton, Secretary of State Mike Pompeo and CIA Director Gina Haspel, along with the rest of Trump’s team, favoured a retaliatory strike, said a Trump administration official who asked not to be named.

Earlier on Friday, Iranian officials told Reuters that Tehran had received a message from Trump warning that a US attack on Iran was imminent but saying that he was against war and wanted talks on a range of issues.

News of that message, delivered through Oman overnight, came shortly after the New York Times reported that Trump had called off air strikes targeting Iranian radar and missile batteries at the last minute.

“In his message, Trump said he was against any war with Iran and wanted to talk to Tehran about various issues,” one of the officials told Reuters, speaking on condition of anonymity.

“He gave a short period of time to get our response but Iran’s immediate response was that it is up to Supreme Leader (Ayatollah Ali) Khamenei to decide about this issue.”

A second Iranian official said: “We made it clear that the leader is against any talks, but the message will be conveyed to him to make a decision.

“However, we told the Omani official that any attack against Iran will have regional and international consequences.”

Khamenei has the last say on all state matters and has ruled out any talks with Washington while Tehran is under sanctions.

Iran shot down the drone after weeks of festering tension amidst a spate of attacks on oil tankers in the Gulf region.

READ: Trump says hard to believe Iran shooting down of US drone was intentional

In his initial response on Thursday, Trump said he was not eager to escalate a stand-off with Iran over its nuclear and ballistic missile activities and support for proxies in various Middle East conflicts.

He said the unmanned drone might have been shot down in error by someone who was acting “loose and stupid”, though added: “This country will not stand for it.”

In a sign that the United States may be interested in pursuing diplomacy for now, it asked the U.N. Security Council to meet on Iran behind closed-doors on Monday, diplomats said.

“We will brief the council on the latest developments with regard to Iran and present further information from our investigation into the recent tanker incidents,” the US mission to the United Nations said in a note to council colleagues, seen by Reuters. </s> DUBAI, United Arab Emirates -- President Donald Trump ordered an attack on Iran on Thursday in retaliation for the downing of a surveillance drone in the Strait of Hormuz but called the operation off just before it was due to occur because it would have caused extensive casualties, he said Friday.

In a series of morning tweets, Trump said he called off strikes on three Iranian sites minutes before they were to be launched because he was informed of the likely loss of life among Iranians.

"We were cocked & loaded to retaliate last night on 3 different sights when I asked, how many will die," Trump tweeted. "150 people, sir, was the answer from a General. 10 minutes before the strike I stopped it."

Such a death toll was "not proportionate to shooting down an unmanned drone," Trump wrote, adding: "I am in no hurry, our Military is rebuilt, new, and ready to go, by far the best in the world. Sanctions are biting & more added last night. Iran can NEVER have Nuclear Weapons, not against the USA, and not against the WORLD!"

Iran said Friday the United States had "no justification" for a retaliatory strike and vowed to respond "firmly" to any U.S. military action.

Trump administration officials, who spoke on the condition of anonymity to discuss sensitive national security decisions, said the president approved the strikes after Iran's Islamic Revolutionary Guard Corps earlier in the day shot down a Navy RQ-4 Global Hawk operating off Iran's southern coast, a move Trump described as a "very big mistake."

But he later changed his mind, the officials said. The decision was first reported by the New York Times.

The commander of the Revolutionary Guard's aerospace division said Friday that Iran had sent "warnings" to the drone before shooting it down. In an interview with Iran's state-controlled broadcaster, Brig. Gen. Amir Ali Hajizadeh said a final warning was sent at 3:55 a.m. local time Thursday.

"When it did not redirect its route and continued flying toward and into our territory, we had to shoot it at 4:05 a.m.," he said. "Our national security is a red line."

He also said that a U.S. P-8 patrol aircraft, with 35 people on board, had accompanied the drone into Iranian airspace. His claim could not immediately be verified.

"We could have downed it, too," Hajizadeh said of the plane, the Fars News Agency reported. "But we did not do it."

A senior U.S. defense official, speaking on the condition of anonymity due to the sensitivity of the subject, said Friday morning that the Pentagon had Navy assets poised to strike in Iran if directed, including ships accompanying the aircraft carrier USS Abraham Lincoln. Those attacks could have included airstrikes with jets, or - more likely - Tomahawk cruise missiles, the official said.

Among the ships that could have been involved were the guided-missile cruiser USS Leyte Gulf and the destroyer USS Bainbridge, the official said. Both vessels can carry Tomahawk missiles.

The official said he could not say whether Iran considered shooting down a Navy P-8 Poseidon surveillance plane with a few dozen U.S. service members aboard before ultimately striking an unmanned RQ-4 over the Gulf of Oman. However, the official said, a P-8 was flying in the region that night.

Iranian state television Friday published images that it said showed pieces of the drone recovered from the debris field. The photographs, which showed large fragments of what appeared to be an aircraft, could not be independently authenticated.

Iranian officials told the Reuters news agency Friday that Tehran received a message from Trump through Oman overnight warning that a U.S. attack was imminent.

"Trump said he was against any war with Iran and wanted to talk to Tehran about various issues," Reuters quoted one official as saying. "He gave a short period of time to get our response." The official added that it was up to Iran's supreme leader, Ayatollah Ali Khamenei, to decide whether to respond.

Iran's permanent mission to the United Nations did not immediately reply to request for comment.

The Federal Aviation Administration late Thursday barred U.S.-registered aircraft from operating over the Persian Gulf and Gulf of Oman, due to an increase in military activities and political tensions that it said might "place commercial flights at risk."

Several U.S. and international carriers said that they had either canceled flights over Iranian airspace or were taking steps to avoid the Strait of Hormuz.

The aborted operation to strike Iran capped a day in which news of the drone's downing heaped fuel on already heightened fears that the United States and Iran were on a course toward a military conflict as each side blamed the other for the incident.

Tehran and Washington gave conflicting accounts of what occurred when the drone with an airliner's wingspan crashed into the sea. While Iran said the aircraft had entered its airspace, the U.S. Central Command denied that assertion, characterizing the incident as an "unprovoked attack" over one of the world's most important commercial waterways.

In remarks alongside visiting Canadian Prime Minister Justin Trudeau at the White House, Trump condemned the shoot-down but also appeared to tamp down speculation that a counterstrike might be in the works, saying the drone may have been shot down without the knowledge of Iranian leaders.

"I'm not just talking about the country made a mistake. I'm talking about somebody under the command of that country made a mistake," Trump said at the White House. "I find it hard to believe it was intentional" on the part of Iran's top officials, the president said.

Trump was noncommittal about a U.S. counterattack. "Let's see what happens," he said. "This is a new fly in the ointment - what happened, shooting down the drone - and this country will not stand for it."

The White House invited a bipartisan group of top congressional leaders to a meeting Thursday afternoon to discuss the situation.

Among those invited were Senate Majority Leader Mitch McConnell, R-Ky., House Speaker Nancy Pelosi, D-Calif., Senate Minority Leader Chuck Schumer, D-N.Y., House Minority Leader Kevin McCarthy, R-Calif., and the chairmen and ranking minority party members of the House and Senate Intelligence and Armed Services committees.

"We had a good briefing," McConnell said, adding that he could confirm that an unmanned aerial vehicle "was fired on from Iranian soil and it was in international waters. And beyond that I think the administration is engaged in what I would call measured responses."

Schumer said he cautioned that "these conflicts have a way of escalating."

"The president may not intend to go to war here, but we're worried that he and the administration may bumble into a war," he said. "One of the best ways to avoid bumbling into war, a war that nobody wants, is to have a robust open debate and for Congress to have a real say. We learned that lesson in the run-up to Iraq" in 2003.

After the White House meeting, Pelosi held a closed-door session with Democratic lawmakers to brief them on the developments. "We know that the high-tension wires are up there, and we must do everything we can not to escalate the situation, but also to make sure that our personnel in the region are safe," she said.

Thursday's strike followed a number of recent incidents, including attacks on oil tankers, that American officials have depicted as part of an Iranian effort to hurt the United States and its allies in the region. The United States has continued its "maximum pressure" campaign against a country the Trump administration has identified as its main adversary in the Middle East.

Tehran has responded with defiance to the campaign, which was launched after Trump withdrew the United States from the 2015 Iran nuclear deal and has included designating the Revolutionary Guard as a terrorist group and taking steps to cut off Iranian oil sales.

On Thursday, the European Union said officials from Germany, Britain, France, Russia, China and Iran would meet next week to discuss strategies to salvage the nuclear pact despite renewed U.S. sanctions and Tehran's threat to exceed limits on its uranium stockpiles.

Saudi Arabia's deputy defense minister said Friday on Twitter that he met with Brian Hook, the State Department's special representative for Iran, in Riyadh "to explore the latest efforts to counter hostile Iranian acts."

The Revolutionary Guard's top commander, Maj. Gen. Hossein Salami, called the downing of the drone "a clear message to America."

"Our borders are Iran's red line, and we will react strongly against any aggression," Salami said in remarks carried by Iranian state television. "Iran is not seeking war with any country, but we are fully prepared to defend Iran."

Nearly a quarter of the world's traded oil passes through the Strait of Hormuz, which connects Middle East energy producers to markets around the globe.

Lt. Gen. Joseph Guastella, head of U.S. air forces in the Middle East, told reporters at the Pentagon that the Global Hawk was flying at high altitude in the vicinity of recent tanker attacks and was not at any time any closer than 21 miles to the nearest point on Iran's coast.

Guastella said the aircraft did not leave international airspace and was brought down by a Republican Guard surface-to-air missile fired from an area close to Goruk, Iran.

"This dangerous and escalatory attack was irresponsible and occurred in the vicinity of established air corridors between Dubai, UAE, and Muscat, Oman, possibly endangering innocent civilians," he said. Guastella did not take questions, and the Pentagon did not make anyone else available to discuss the tensions.

The Global Hawk incident occurred the week after two tankers, one Japanese and one Norwegian, were attacked in the Gulf of Oman. The Trump administration has blamed Iran for both incidents, at least one of which is said to have been carried out by use of limpet mine similar to devices previously displayed at Iranian military parades. Iran has denied involvement, calling the accusation "a lie."

The tanker incidents were similar to an attack on a tanker off the United Arab Emirates in May. The U.S. military also accused Iran of firing a modified SA-7 surface-to-air missile at an MQ-9 Reaper drone over the Gulf of Oman as it surveilled the attack on the Japanese ship.

Also this month, Centcom said Houthi rebels shot down an MQ-9 over Yemen using an SA-6 surface-to-air missile in an attack that "was enabled by Iranian assistance."

The latest incident came just days before acting defense secretary Patrick Shanahan was due to step down. Shanahan, who this week withdrew from his confirmation process after news media, including The Washington Post, published reports about past family strife, is handing responsibility for the military to Mark Esper, who now serves as Army secretary.

It is unclear how the turnover at the top of the Pentagon will affect an internal debate about how to respond to what officials say is an attempt to strike American interests. Some defense officials have voiced concerns that officials led by national security adviser John Bolton, who has publicly advocated regime change in Iran in the past, may be creating conditions in which war is inevitable.

Trump has previously authorized targeted strikes in the Middle East, including on government-controlled air bases in Syria. He was elected in 2016 promising to end American involvement in conflicts in the region.

At the same time, the Pentagon remains concerned about the potential for Iranian attacks on U.S. military personnel, especially those stationed in Iraq. During a visit to Baghdad last month, Secretary of State Mike Pompeo sought to relay a message for Iranian leaders that even one American death would result in a U.S. counterattack.

Trump appeared to tamp down the likelihood of an immediate military response as he highlighted the fact that the Global Hawk was unmanned. "We had nobody in the drone," he said. "It would have made a big difference, let me tell you."

Sen. Lindsey Graham, R-S.C., tweeted, "When it comes to the Middle East, there are seldom good choices."

"But in some instances, failing to act can prove to be the most dangerous choice of all," he said.

A U.S. official, speaking on the condition of anonymity, said U.S. naval assets were trying to recover pieces of the drone.

The strike on the RQ-4 is much more significant than the recent attacks on Reapers. Each Global Hawk, which has a wingspan of 131 feet, is worth more than $100 million and is packed with sensors and able to fly at altitudes of more than 55,000 feet to observe broad areas for periods that can stretch longer than a day.

The Global Hawk downed on Thursday was an older "demonstrator" model, according to another U.S. official, that had been transferred from the Air Force to the Navy to carry out a mission known as Broad Area Maritime Surveillance. The Pentagon has since begun testing a newer cousin, the MQ-4C Triton. Neither version carries weapons.

According to a Revolutionary Guard statement, the U.S. drone took off from a base in the "southern Persian Gulf" and was heading toward Iran's Chabahar port "in full secrecy, violating the rules of international aviation."

"While returning to the western Hormuz Strait's region, the drone violated Iran's airspace and engaged in information-gathering and spying," the statement said.

At its narrowest, the Strait of Hormuz is just 21 nautical miles wide, and ships passing through it must enter the territorial waters of Iran and Oman. Under the rule of the shah in 1959, Iran extended its territorial waters to 12 nautical miles and declared that it would recognize only "innocent passage" through the area, essentially excluding warships engaging in activities deemed hostile. Oman also claimed a 12-mile territorial limit in 1972 and later demanded that foreign warships obtain permission to pass through its waters.

The United States does not recognize any restrictions on transit through the strait.

Ryan and Lamothe reported from Washington. The Washington Post’s William Branigin in Washington contributed to this report. </s> Lolita C. Baldor and Deb Riechmann, The Associated Press 

 



WASHINGTON -- The United States abruptly called off preparations for a military strike against Iran over the downing of a U.S. surveillance drone, a U.S. official said, while Iran claimed Friday it had issued several warnings before shooting down the drone over what it said was Iranian territory.

The Trump administration offered no immediate public account of the thinking behind the last-minute halt in U.S. preparations for retaliation, amid days of escalating tensions between the two countries. A U.S. official, who was not authorized to discuss the operation publicly and spoke on condition of anonymity, said the targets would have included radars and missile batteries.

The swift reversal was a stark reminder of the serious risk of military conflict between U.S. and Iranian forces as the Trump administration combines a "maximum pressure" campaign of economic sanctions with a buildup of American forces in the region. As tensions mounted in recent weeks, there have been growing fears that either side could make a dire miscalculation that led to war.

On Friday, the head of Iran's Revolutionary Guard's aerospace division told Iranian state television that Iran had warned a U.S. military surveillance drone several times before launching a missile at it.

Gen. Amir Ali Hajizadeh made the comments standing in front of what Iranian authorities described as pieces of the U.S. Navy RQ-4A Global Hawk drone.

Hajizadeh told state TV: "Unfortunately they did not answer."

He added Iran collected the debris from its territorial waters. The U.S. military says that the drone was in international airspace over the Strait of Hormuz when it was shot down.

The New York Times separately reported that President Donald Trump had approved the strikes Thursday night, but then called them off. The newspaper cited anonymous senior administration officials.

Asked earlier in the day about a U.S. response to the attack, Trump said, "You'll soon find out."

According to the official who spoke to The Associated Press, the strikes were recommended by the Pentagon and were among the options presented to senior administration officials.

It was unclear how far the preparations had gone, but no shots were fired or missiles launched, the official said.

The military operation was called off around 7:30 p.m. Washington time, after Trump had spent most of Thursday discussing Iran strategy with top national security advisers and congressional leaders.

The downing of the U.S. drone -- a huge, unmanned aircraft -- over the Strait of Hormuz prompted accusations from the U.S. and Iran about who was the aggressor. Iran insisted the drone violated Iranian airspace; Washington said it had been flying over international waters.

Trump's initial comments on the attack were succinct. He declared in a tweet that "Iran made a very big mistake!" But he also suggested that shooting down the drone -- which has a wingspan wider than a Boeing 737 -- was a foolish error rather than an intentional escalation, suggesting he may have been looking for some way to avoid a crisis.

"I find it hard to believe it was intentional, if you want to know the truth," Trump said at the White House. "I think that it could have been somebody who was loose and stupid that did it."

Trump, who has said he wants to avoid war and negotiate with Iran over its nuclear ambitions, cast the shootdown as "a new wrinkle ... a new fly in the ointment." Yet he also said "this country will not stand for it, that I can tell you."

He said the American drone was unarmed and unmanned and "clearly over international waters." It would have "made a big, big difference" if someone had been inside, he said.

But fears of open conflict shadowed much of the discourse in Washington. As the day wore on, Trump summoned his top national security advisers and congressional leaders to the White House for an hour-long briefing in the Situation Room. Attendees included Secretary of State Mike Pompeo, national security adviser John Bolton, CIA Director Gina Haspel, Joint Chiefs Chairman Gen. Joseph Dunford, acting Defence Secretary Patrick Shanahan and Army Secretary Mark Esper, whom Trump has said he'll nominate as Pentagon chief.

Pompeo and Bolton have advocated hardline policies against Iran, but Rep. Adam Schiff, the chairman of the House intelligence committee, said "the president certainly was listening" when congressional leaders at the meeting urged him to be cautious and not escalate the already tense situation.

On Capitol Hill, leaders urged caution, and some lawmakers insisted the White House must consult with Congress before taking any actions.

House Speaker Nancy Pelosi said no specific options for a U.S. response were presented at the meeting. Senate Majority Leader Mitch McConnell said, "The administration is engaged in what I would call measured responses." And late Thursday, House Republicans on the Foreign Affairs, intelligence and Armed Services committees issued a statement using the same word, saying, "There must be a measured response to these actions."

The Trump administration has been putting increasing economic pressure on Iran for more than a year. It reinstated punishing sanctions following Trump's decision to pull the U.S. out of an international agreement intended to limit Iran's nuclear program in exchange for relief from earlier sanctions.

Citing Iranian threats, the U.S. recently sent an aircraft carrier to the Persian Gulf region and deployed additional troops alongside the tens of thousands already there. All this has raised fears that a miscalculation or further rise in tensions could push the U.S. and Iran into an open conflict 40 years after Tehran's Islamic Revolution.

The paramilitary Guard, which answers only to Supreme Leader Ayatollah Ali Khamenei, said it shot down the drone at 4:05 a.m. Thursday when it entered Iranian airspace near the Kouhmobarak district in southern Iran's Hormozgan province. Kouhmobarak is about 1,200 kilometres (750 miles) southeast of Tehran.

Taking issue with the U.S. version of where the attack occurred, Iranian Foreign Minister Mohammad Javad Zarif tweeted that his country had retrieved sections of the military drone "in OUR territorial waters where it was shot down." He said, "We don't seek war but will zealously defend our skies, land & waters."

Air Force Lt. Gen. Joseph Guastella, commander of U.S. Central Command air forces in the region, disputed that contention, telling reporters that the aircraft was 34 kilometres (21 miles) from the nearest Iranian territory and flying at high altitude when struck by a surface-to-air missile. The U.S. military has not commented on the mission of the remotely piloted aircraft that can fly higher than 10 miles in altitude and stay in the air for over 24 hours at a time.

"This attack is an attempt to disrupt our ability to monitor the area following recent threats to international shipping and free flow of commerce," he said.

Late Thursday, the Federal Aviation Administration barred American-registered aircraft from flying over parts of the Persian Gulf and the Gulf of Oman and several major airlines from around the world on Friday began rerouting their flights to avoid the area, including British Airways, Australia's Qantas, Germany's Lufthansa and the Dutch carrier KLM.

Democratic leaders in particular urged the president to work with U.S. allies and stressed the need for caution to avoid any unintended escalation.

Sen. Chuck Schumer of New York said he told Trump that conflicts have a way of escalating and "we're worried that he and the administration may bumble into a war."

Associated Press writers Jill Colvin, Lisa Mascaro and Matthew Lee in Washington, Jon Gambrell in Dubai, United Arab Emirates, and AP video producer Padmananda Rama contributed to this report.
U.S. President Donald Trump, when asked about the strike, says it is "hard to believe it was intentional". He later approves retaliatory military attacks against Iranian missile and radar facilities, but subsequently changes his mind.