Kuwait City Tensions between the two countries increased further in July 1990, after Iraq complained to OPEC claiming that Kuwait was stealing its oil from a field near the border by slant drilling of the Rumaila field. In August 1990, Iraqi forces invaded and annexed Kuwait. After a series of failed diplomatic negotiations, the United States led a coalition to remove the Iraqi forces from Kuwait, in what became known as the Gulf War. On 26 February 1991, the coalition succeeded in driving out the Iraqi forces. As they retreated, Iraqi forces carried out a scorched earth policy by setting oil wells
Liberation of Kuwait campaign the U.S. Marines stopped at the outskirts of Kuwait City, allowing their Coalition allies to take and occupy Kuwait City, effectively ending combat operations in the Kuwaiti theater of the war. After four days of fighting, all Iraqi troops were expelled from Kuwait, ending a nearly seven-month occupation of Kuwait by Iraq. A little over 1,100 casualties were suffered by the Coalition. Estimates of Iraqi casualties range from 30,000 to 150,000. Iraq lost thousands of vehicles, while the advancing Coalition lost relatively few; Iraq's obsolete Soviet T-72 tanks proved no match for the American M1 Abrams and British Challenger tanks.