During the presidency of George H. W. Bush, the United States had launched the Gulf War against Iraq after the latter invaded Kuwait. Though the U.S. forced Iraq's withdrawal from Kuwait, it left Saddam Hussein's administration in place, partly to serve as a counterweight to Iran. After the war, the Project for the New American Century, consisting of influential neoconservatives like Paul Wolfowitz and Cheney, advocated for the overthrow of Hussein. Iraq had developed nuclear and chemical weapons prior to the Gulf War; after the war, it had submitted to WMD inspections conducted by the United Nations Special Commission until 1998, when Hussein demanded that all UN inspectors leave Iraq. The administration believed that, by 2001, Iraq was developing weapons of mass destruction, and could possibly provide those weapons to terrorists. Some within the administration also believed that Iraq shared some responsibility for the September 11 attacks, and hoped that the fall of Hussein's regime would help spread democracy in the Middle East, deter the recruitment of terrorists, and increase the security of Israel.