"Kuwait remains pivotal to U.S. efforts to secure the Persian Gulf region because of its consistent cooperation with U.S. strategy and operations in the region and its proximity to both Iran and Iraq. Kuwait and the United States have a formal Defense Cooperation Agreement (DCA), under which the United States maintains forces and pre-positioned military equipment in Kuwait. These forces contribute to U.S. efforts to project power and otherwise operate in the region, including combatting the Islamic State. Kuwait receives no U.S. foreign assistance, and has offset some of the costs of U.S. operations in the region since Iraq's 1990 invasion of Kuwait. On regional issues, Kuwait usually acts in concert with allies in the Gulf Cooperation Council (GCC: Saudi Arabia, Kuwait, UAE [United Arab Emirates], Qatar, Bahrain, and Oman). In March 2011, Kuwait supported the GCC military intervention to help Bahrain's government suppress an uprising by the majority Shiite population, but it sent only largely symbolic naval ships and not ground forces. Kuwait is participating militarily in the Saudi-led coalition that is trying to defeat the Shiite 'Houthi' rebel movement in Yemen, but has also worked to forge a diplomatic solution to that conflict. Kuwait's leadership, along with that of Saudi Arabia and UAE, supported the Egyptian military's July 2013 removal of elected president and senior Muslim Brotherhood leader Mohammad Morsi. Kuwait has supported U.S. efforts to contain Iran and has periodically arrested Kuwaiti Shiites that the government says are spying for Iran, but it also engages Iran at high levels, including on the Yemen conflict. As part of this engagement, in mid-February 2017, Iran's President Hassan Rouhani visited Kuwait and Oman -the GCC state that most consistently engages Iran."
CRS Report for Congress, RS21513
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html