In this Saturday, Feb. 26, 2011, file photo, U.S. Army heavy battle tanks are seen during a military parade commemorating the 20th anniversary of the liberation of Kuwait from the 1990 Iraqi invasion in Subiya, 120km north east of Kuwait City. In the past two months the U.S. Defense Department has notified Congress of possible arms deals totaling more than $11.3 billion to Gulf states such as Qatar and Kuwait, which are seen as among the critical frontline partners in U.S. strategies to counter Iran and protect oil shipping lanes. (AP Photo/Gustavo Ferrari-File)