The Gulf War was an armed conflict between Iraq and a 42-country coalition led by the United States. The coalition's efforts against Iraq were carried out in two key phases: Operation Desert Shield, which marked the military buildup from August 1990 to January 1991; and Operation Desert Storm, which began with the aerial bombing campaign against Iraq on 17 January 1991 and came to a close with the American-led liberation of Kuwait on 28 February 1991.
On 2 August 1990, Iraq, governed by Saddam Hussein, invaded neighboring Kuwait and fully occupied the country within two days. The invasion was primarily over disputes regarding Kuwait's alleged slant drilling in Iraq's Rumaila oil field, as well as to cancel Iraq's large debt to Kuwait from the recently ended Iran–Iraq War. After Iraq briefly occupied Kuwait under a rump puppet government known as the Republic of Kuwait, it split Kuwait's sovereign territory into the Saddamiyat al-Mitla' District in the north, which was absorbed into Iraq's existing Basra Governorate, and the Kuwait Governorate in the south, which became Iraq's 19th governorate.