FILE - In this Feb. 24, 1991 file photo, smoke from a burning oil well in Kuwait billows behind an armored vehicle from the U.S. Marines Second Division near the Saudi-Kuwait border prior to the start of the ground war against Iraq. In February 1991, after months of building an international coalition, U.S. forces entered Kuwait to end the Iraqi occupation of its smaller, oil-rich neighbor. (AP Photo/Sakayuki Mikami, File)