Question: Who was in charge of the nation where 66 citizens of the country that the Soviets didn't want to engage in conflict with, were held hostage for 444 days in the late 1970s?

full_context: Document 1: Embassy of the United States, Tehran: The Embassy of the United States of America in Tehran was the United States of America's diplomatic mission in the Imperial State of Iran. Direct bilateral diplomatic relations between the two governments were severed following the Iranian Revolution in 1979, and the subsequent seizure of the embassy in November 1979.
Document 2: Korean War: In a series of emergency meetings that lasted from 2–5 October, Chinese leaders debated whether to send Chinese troops into Korea. There was considerable resistance among many leaders, including senior military leaders, to confronting the U.S. in Korea. Mao strongly supported intervention, and Zhou was one of the few Chinese leaders who firmly supported him. After Lin Biao politely refused Mao's offer to command Chinese forces in Korea (citing his upcoming medical treatment), Mao decided that Peng Dehuai would be the commander of the Chinese forces in Korea after Peng agreed to support Mao's position. Mao then asked Peng to speak in favor of intervention to the rest of the Chinese leaders. After Peng made the case that if U.S. troops conquered Korea and reached the Yalu they might cross it and invade China the Politburo agreed to intervene in Korea. Later, the Chinese claimed that US bombers had violated PRC national airspace on three separate occasions and attacked Chinese targets before China intervened. On 8 October 1950, Mao Zedong redesignated the PLA North East Frontier Force as the Chinese People's Volunteer Army (PVA).
Document 3: Iranian Embassy siege: The Iranian Embassy siege took place from 30 April to 5 May 1980, after a group of six armed men stormed the Iranian embassy in South Kensington, London. The gunmen, members of an Iranian Arab group campaigning for Arab national sovereignty in the southern Iranian region of Khuzestan Province, took 26 people hostage -- mostly embassy staff, but also several visitors as well as a police officer who had been guarding the embassy. They demanded the release of Arab prisoners from prisons in Khuzestan and their own safe passage out of the United Kingdom. Margaret Thatcher's government quickly resolved that safe passage would not be granted, and a siege ensued. Over the following days, police negotiators secured the release of five hostages in exchange for minor concessions, such as the broadcasting of the hostage - takers' demands on British television.
Document 4: Korean War: In April 1950, Stalin gave Kim permission to invade the South under the condition that Mao would agree to send reinforcements if they became needed. Stalin made it clear that Soviet forces would not openly engage in combat, to avoid a direct war with the Americans. Kim met with Mao in May 1950. Mao was concerned that the Americans would intervene but agreed to support the North Korean invasion. China desperately needed the economic and military aid promised by the Soviets. At that time, the Chinese were in the process of demobilizing half of the PLA's 5.6 million soldiers. However, Mao sent more ethnic Korean PLA veterans to Korea and promised to move an army closer to the Korean border. Once Mao's commitment was secured, preparations for war accelerated.
Document 5: Iran hostage crisis: The Iran hostage crisis was a diplomatic standoff between Iran and the United States of America. Fifty - two American diplomats and citizens were held hostage for 444 days from November 4, 1979, to January 20, 1981, after a group of Iranian college students belonging to the Muslim Student Followers of the Imam's Line, who supported the Iranian Revolution, took over the U.S. Embassy in Tehran. It stands as the longest hostage crisis in recorded history.
Document 6: Iran: On November 4, 1979, a group of students seized the United States Embassy and took the embassy with 52 personnel and citizens hostage, after the United States refused to return Mohammad Reza Pahlavi to Iran to face trial in the court of the new regime. Attempts by the Jimmy Carter administration to negotiate for the release of the hostages, and a failed rescue attempt, helped force Carter out of office and brought Ronald Reagan to power. On Jimmy Carter's final day in office, the last hostages were finally set free as a result of the Algiers Accords.
Document 7: South Korea: On June 25, 1950, North Korea invaded South Korea, sparking the Korean War, the Cold War's first major conflict, which continued until 1953. At the time, the Soviet Union had boycotted the United Nations (UN), thus forfeiting their veto rights. This allowed the UN to intervene in a civil war when it became apparent that the superior North Korean forces would unify the entire country. The Soviet Union and China backed North Korea, with the later participation of millions of Chinese troops. After an ebb and flow that saw both sides almost pushed to the brink of extinction, and massive losses among Korean civilians in both the north and the south, the war eventually reached a stalemate. The 1953 armistice, never signed by South Korea, split the peninsula along the demilitarized zone near the original demarcation line. No peace treaty was ever signed, resulting in the two countries remaining technically at war. Over 1.2 million people died during the Korean War.
Document 8: Name of Iran: In the Western world, Persia (or one of its cognates) was historically the common name for Iran. On the Nowruz of 1935, Reza Shah Pahlavi asked foreign delegates to use the term Iran, the endonym of the country, in formal correspondence. Since then, in the Western World, the use of the word ``Iran ''has become more common. This also changed the usage of the terms for Iranian nationality, and the common adjective for citizens of Iran changed from`` Persian'' to ``Iranian ''. In 1959, the government of Mohammad Reza Shah Pahlavi, Reza Shah Pahlavi's son, announced that both`` Persia'' and ``Iran ''could officially be used interchangeably. However the issue is still debated today.
Document 9: Korean War: On 18 September, Stalin dispatched General H. M. Zakharov to Korea to advise Kim Il-sung to halt his offensive around the Pusan perimeter and to redeploy his forces to defend Seoul. Chinese commanders were not briefed on North Korean troop numbers or operational plans. As the overall commander of Chinese forces, Zhou Enlai suggested that the North Koreans should attempt to eliminate the enemy forces at Inchon only if they had reserves of at least 100,000 men; otherwise, he advised the North Koreans to withdraw their forces north.
Document 10: Hassan Rouhani: Rouhani was deputy speaker of the fourth and fifth terms of the Parliament of Iran (Majlis) and Secretary of the Supreme National Security Council from 1989 to 2005. In the latter capacity, he was the country's top negotiator with the EU three, UK, France, and Germany, on nuclear technology in Iran, and has also served as a Shi'ite ijtihadi cleric, and economic trade negotiator. He has expressed official support for upholding the rights of ethnic and religious minorities. In 2013, he appointed former industries minister Eshaq Jahangiri as his first vice-president.On 7 May 2013, Rouhani registered for the presidential election that was held on 14 June 2013. He said that, if elected, he would prepare a "civil rights charter", restore the economy and improve rocky relations with Western nations. Rouhani is frequently described as a moderate. He was elected as President of Iran on 15 June, defeating Tehran mayor Mohammad Bagher Ghalibaf and four other candidates. He took office on 3 August 2013. In 2013, Time magazine named him in its list of the 100 Most Influential People in the World. In domestic policy, he encourages personal freedom and free access to information, has improved women's rights by appointing female foreign ministry spokespeople, and has been described as a centrist and reformist who has improved Iran's diplomatic relations with other countries through exchanging conciliatory letters. Rouhani won re-election in the 2017 election with 23,636,652 votes (57.1%). He became the third Iranian President, after Mohammad Khatami and Mahmoud Ahmadinejad, to win a presidential victory as an incumbent with an increased electoral mandate.
Document 11: Iran: Hassan Rouhani was elected as the president on 15 June 2013, defeating Mohammad Bagher Ghalibaf and four other candidates. The electoral victory of Rouhani has relatively improved the relations of Iran with other countries.
Document 12: Eric Parnes: In January 2014, the Ayyam Gallery premiered at their DIFC location in Dubai an exhibition of Eric Parnes' photographs of the remaining interiors of the Former Embassy of Iran in Washington, D.C. The building has been "long and abandoned", and still is, shuttered and inaccessible in over three decades since its closure circa 1979-1980 with the Iranian Revolution and the resulting severance of dialogue with the United States due to the Iran Hostage Crisis . Parnes' imagery showcases the remaining visual legacy of the Embassy, renowned for its active social presence in the 1960s and 1970s as an immensely popular party destination in Washington, D.C. under the leadership of then-Ambassador Ardeshir Zahedi, who was interviewed during the exhibition about Parnes stating “We have had a long friendship,” he said. “Iran and the U.S., they need each other. They may be friends; they must be friends.”. Frequent political and celebrity guests included Barbra Streisand, Elizabeth Taylor, Frank Sinatra, Sen. Edward "Ted" Kennedy, Secretary of State Henry Kissinger and Andy Warhol.Barbara Walters wrote: "The number one embassy when it came to extravagance and just plain enjoyment was the Iranian Embassy." Parnes' stylized photographs, on the other hand, now show an empty, dark building yet that still holds remarkably preserved elements of elaborate Persian mosaics and mirrored rooms amidst the general decay.
Document 13: Korean War: Although Kim's early successes had led him to predict that he would end the war by the end of August, Chinese leaders were more pessimistic. To counter a possible U.S. deployment, Zhou Enlai secured a Soviet commitment to have the Soviet Union support Chinese forces with air cover, and deployed 260,000 soldiers along the Korean border, under the command of Gao Gang. Zhou commanded Chai Chengwen to conduct a topographical survey of Korea, and directed Lei Yingfu, Zhou's military advisor in Korea, to analyze the military situation in Korea. Lei concluded that MacArthur would most likely attempt a landing at Incheon. After conferring with Mao that this would be MacArthur's most likely strategy, Zhou briefed Soviet and North Korean advisers of Lei's findings, and issued orders to Chinese army commanders deployed on the Korean border to prepare for American naval activity in the Korea Strait.
Document 14: Iran: Iran received access to the Internet in 1993. According to 2014 census, around 40% of the population of Iran are Internet users. Iran ranks 24th among countries by number of Internet users. According to the statistics provided by the web information company of Alexa, Google Search and Yahoo! are the most used search engines in Iran. Over 80% of the users of Telegram, a cloud-based instant messaging service, are from Iran. Instagram is the most popular online social networking service in Iran. Direct access to Facebook has been blocked in Iran since the 2009 Iranian presidential election protests, due to organization of the opposition movements on the website; but however, Facebook has around 12 to 17 million users in Iran who are using virtual private networks and proxy servers to access the website. Around 90% of Iran's e-commerce takes place on the Iranian online store of Digikala, which has around 750,000 visitors per day and more than 2.3 million subscribers. Digikala is the most visited online store in the Middle East, and ranks 4th among the most visited websites in Iran.
Document 15: Iran: Economic sanctions against Iran, such as the embargo against Iranian crude oil, have affected the economy. Sanctions have led to a steep fall in the value of the rial, and as of April 2013 one US dollar is worth 36,000 rial, compared with 16,000 in early 2012. Following a successful implementation of the 2015 nuclear and sanctions relief deal, the resulting benefits might not be distributed evenly across the Iranian economy as political elites such as the Islamic Revolutionary Guard Corps have garnered more resources and economic interests.
ground_truth: Hassan Rouhani
sub_queries: Who did the Soviets not want to engage in conflict? Answer: the Americans
where were 66 the Americans held hostage for 444 days in the late 1970s Answer: Iran
Who was in charge of Iran ? Answer: Hassan Rouhani