FILE - In this Wednesday, Sept. 12, 2012 file photo, a man looks at documents at the U.S. consulate in Benghazi, Libya, after an attack that killed four Americans, including Ambassador

 

              FILE - In this Wednesday, Sept. 12, 2012 file photo, a man looks at documents at the U.S. consulate in Benghazi, Libya, after an attack that killed four Americans, including Ambassador
FILE - In this Wednesday, Sept. 12, 2012 file photo, a man looks at documents at the U.S. consulate in Benghazi, Libya, after an attack that killed four Americans, including Ambassador Chris Stevens. The graffiti reads, "no God but God," " God is great," and "Muhammad is the Prophet." Witness accounts gathered by The Associated Press give a from-the-ground perspective for the sharply partisan debate in the U.S. over the deadly incident. They corroborate the conclusion largely reached by American officials that it was a planned militant assault. But they also suggest the militants may have used a film controversy as a cover for the attack. (AP Photo/Ibrahim Alaguri)