Question: What year did the war that involved Desert Patrol Vehicles start?

full_context: Document 1: Islamism: Another factor in the early 1990s that worked to radicalize the Islamist movement was the Gulf War, which brought several hundred thousand US and allied non-Muslim military personnel to Saudi Arabian soil to put an end to Saddam Hussein's occupation of Kuwait. Prior to 1990 Saudi Arabia played an important role in restraining the many Islamist groups that received its aid. But when Saddam, secularist and Ba'athist dictator of neighboring Iraq, attacked Saudi Arabia (his enemy in the war), western troops came to protect the Saudi monarchy. Islamists accused the Saudi regime of being a puppet of the west.
Document 2: Desert Patrol Vehicle: The Desert Patrol Vehicle (DPV), formerly called the Fast Attack Vehicle (FAV), is a high-speed, lightly armored sandrail-like vehicle first used in combat during the Gulf War in 1991. Due to their dash speed and off-road mobility, the DPVs were used extensively during Operation Desert Storm. The first U.S. forces to enter Kuwait City were United States Navy SEALs in DPVs.
Document 3: Gulf War: The Gulf War (2 August 1990 -- 28 February 1991), codenamed Operation Desert Shield (2 August 1990 -- 17 January 1991) for operations leading to the buildup of troops and defense of Saudi Arabia and Operation Desert Storm (17 January 1991 -- 28 February 1991) in its combat phase, was a war waged by coalition forces from 35 nations led by the United States against Iraq in response to Iraq's invasion and annexation of Kuwait.
Document 4: Gulf War: The Gulf War (2 August 199028 February 1991), codenamed Operation Desert Shield (2 August 199017 January 1991) for operations leading to the buildup of troops and defense of Saudi Arabia and Operation Desert Storm (17 January 199128 February 1991) in its combat phase, was a war waged by coalition forces from 35 nations led by the United States against Iraq in response to Iraq's invasion and annexation of Kuwait arising from oil pricing and production disputes. The war is also known under other names, such as the Persian Gulf War, First Gulf War, Gulf War I, Kuwait War, First Iraq War or Iraq War, before the term "Iraq War" became identified instead with the post-2003 Iraq War.
Document 5: BRDM-2: The BRDM-2 ("Boyevaya Razvedyvatelnaya Dozornaya Mashina", Боевая Разведывательная Дозорная Машина, literally "Combat Reconnaissance/Patrol Vehicle") is an amphibious armoured patrol car used by Russia and the former Soviet Union. It was also known under the designations BTR-40PB, BTR-40P-2 and GAZ 41-08. This vehicle, like many other Soviet designs, has been exported extensively and is in use in at least 38 countries. It was intended to replace the earlier BRDM-1, compared to which it had improved amphibious capabilities and better armament.
Document 6: Rakhsh APC: Rakhsh is a lightweight Iranian 4x4 cross-country APC developed and produced by DIO's Shahid Kolah Dooz Industrial Complex and named after Rakhsh, the mythical horse of Rostam in Shahnama. It is probably based on a proven 4 × 4 cross-country chassis present in Iran before and is in service of Iranian Police, Iranian Army, IRGC and Sudan.
Document 7: Military history of the United States: After the lengthy Iraq disarmament crisis culminated with an American demand that Iraqi President Saddam Hussein leave Iraq, which was refused, a coalition led by the United States and the United Kingdom fought the Iraqi army in the 2003 invasion of Iraq. Approximately 250,000 United States troops, with support from 45,000 British, 2,000 Australian and 200 Polish combat forces, entered Iraq primarily through their staging area in Kuwait. (Turkey had refused to permit its territory to be used for an invasion from the north.) Coalition forces also supported Iraqi Kurdish militia, estimated to number upwards of 50,000. After approximately three weeks of fighting, Hussein and the Ba'ath Party were forcibly removed, followed by 9 years of military presence by the United States and the coalition fighting alongside the newly elected Iraqi government against various insurgent groups.
Document 8: Gulf War: The war is also known under other names, such as the Persian Gulf War, First Gulf War, Gulf War I, Kuwait War, First Iraq War or Iraq War, before the term ``Iraq War ''became identified instead with the 2003 Iraq War (also referred to in the US as`` Operation Iraqi Freedom''). The Iraqi Army's occupation of Kuwait that began 2 August 1990 was met with international condemnation and brought immediate economic sanctions against Iraq by members of the UN Security Council. US President George H.W. Bush deployed US forces into Saudi Arabia, and urged other countries to send their own forces to the scene. An array of nations joined the coalition, the largest military alliance since World War II. The great majority of the coalition's military forces were from the US, with Saudi Arabia, the United Kingdom and Egypt as leading contributors, in that order. Kuwait and Saudi Arabia paid around US $32 billion of the US $60 billion cost.
Document 9: Wolf Armoured Vehicle: The idea for the Wolf was born from the need of transporting soldiers safely during missions in an urban environment, and in peacekeeping missions. Recently the Israeli Ministry of Defense ordered 150 Wolf Armoured Vehicles from Rafael Advanced Defense Systems and an order for Carmor, for some to be used in urban combat. This is currently in production. The vehicle's first reported use was by the Israel Defense Forces in Operation Bringing Home the Goods on 14 March 2006.
Document 10: Gulf War: The war is also known under other names, such as the Persian Gulf War, First Gulf War, Gulf War I, Kuwait War, First Iraq War or Iraq War, before the term ``Iraq War ''became identified instead with the 2003 Iraq War (also referred to in the US as`` Operation Iraqi Freedom''). The Iraqi Army's occupation of Kuwait that began 2 August 1990 was met with international condemnation and brought immediate economic sanctions against Iraq by members of the UN Security Council. Together with the UK's prime minister Margaret Thatcher (who had fiercely resisted the invasion by Argentina of the Falkland Islands a decade earlier), George Bush deployed US forces into Saudi Arabia, and urged other countries to send their own forces to the scene. An array of nations joined the coalition, forming the largest military alliance since World War II. The great majority of the coalition's military forces were from the US, with Saudi Arabia, the United Kingdom and Egypt as leading contributors, in that order. Kuwait and Saudi Arabia paid around US $32 billion of the US $60 billion cost.
Document 11: War on Terror: Following the ceasefire agreement that suspended hostilities (but not officially ended) in the 1991 Gulf War, the United States and its allies instituted and began patrolling Iraqi no-fly zones, to protect Iraq's Kurdish and Shi'a Arab population—both of which suffered attacks from the Hussein regime before and after the Gulf War—in Iraq's northern and southern regions, respectively. U.S. forces continued in combat zone deployments through November 1995 and launched Operation Desert Fox against Iraq in 1998 after it failed to meet U.S. demands of "unconditional cooperation" in weapons inspections.
Document 12: Infantry mobility vehicle: An infantry mobility vehicle (IMV) is a wheeled armored personnel carrier (APC) serving as a military patrol, reconnaissance or security vehicle. Examples include the ATF Dingo, Oshkosh, Iveco LMV, M-ATV, AMZ Dzik, AMZ Tur, Mungo ESK, and Bushmaster IMV. This term also applies to those vehicles fielded as part of the MRAP program.
Document 13: 1973 oil crisis: On October 6, 1973, Syria and Egypt, with support from other Arab nations, launched a surprise attack on Israel, on Yom Kippur. This renewal of hostilities in the Arab–Israeli conflict released the underlying economic pressure on oil prices. At the time, Iran was the world's second-largest oil exporter and a close US ally. Weeks later, the Shah of Iran said in an interview: "Of course [the price of oil] is going to rise... Certainly! And how!... You've [Western nations] increased the price of the wheat you sell us by 300 percent, and the same for sugar and cement... You buy our crude oil and sell it back to us, refined as petrochemicals, at a hundred times the price you've paid us... It's only fair that, from now on, you should pay more for oil. Let's say ten times more."
Document 14: Invasion of Kuwait: The Invasion of Kuwait on 2 August 1990 was a two - day operation conducted by Iraq against the neighboring state of Kuwait, which resulted in the seven - month - long Iraqi occupation of the country. This invasion and Iraq's subsequent refusal to withdraw from Kuwait by a deadline mandated by the United Nations led to military intervention by a United Nations - authorized coalition of forces led by the United States. These events came to be known as the first Gulf War and resulted in the expulsion of Iraqi forces from Kuwait and the Iraqis setting 600 Kuwaiti oil wells on fire during their retreat.
Document 15: United States Army: By 1989 Germany was nearing reunification and the Cold War was coming to a close. Army leadership reacted by starting to plan for a reduction in strength. By November 1989 Pentagon briefers were laying out plans to reduce army end strength by 23%, from 750,000 to 580,000. A number of incentives such as early retirement were used. In 1990 Iraq invaded its smaller neighbor, Kuwait, and U.S. land forces, quickly deployed to assure the protection of Saudi Arabia. In January 1991 Operation Desert Storm commenced, a U.S.-led coalition which deployed over 500,000 troops, the bulk of them from U.S. Army formations, to drive out Iraqi forces. The campaign ended in total victory, as Western coalition forces routed the Iraqi Army, organized along Soviet lines, in just one hundred hours.
ground_truth: 2 August 1990
sub_queries: In which war did Desert Patrol Vehicle fought? Answer: Gulf War
What year did Gulf War start? Answer: 2 August 1990