On August 2, 1990, Iraq invaded Kuwait. The ensuing 1991 Gulf War produced nearly three million refugees, many of them from Iraq. Almost all them left Iraq and Kuwait before the war started or after Desert Storm was over. The largest groups were the Kurds and Shi'as fleeing Saddam Hussein after a failed uprising, as well as the Palestinians. Palestinians were the second largest group uprooted by the war, and 300,000 resettled in Jordan. There were a smaller number of Iraqi Arab refugees, only about 37,000, mostly shia who moved to Saudi Arabia. About 100,000 Iraqis escaped to Jordan and Syria.