FILE - In this Friday, Sept. 14, 2012 file photo, President Mohammed el-Megarif, center, visits the U.S. Consulate to express sympathy for the death of the American ambassador, Chris St

 

              FILE - In this Friday, Sept. 14, 2012 file photo, President Mohammed el-Megarif, center, visits the U.S. Consulate to express sympathy for the death of the American ambassador, Chris St
FILE - In this Friday, Sept. 14, 2012 file photo, President Mohammed el-Megarif, center, visits the U.S. Consulate to express sympathy for the death of the American ambassador, Chris Stevens and his colleagues in the deadly attack on the Consulate last Tuesday, September 11, in Benghazi, Libya. Britain's Foreign Office urged U.K. nationals to immediately leave the eastern Libyan city of Benghazi in response to an imminent threat against Westerners. (AP Photo/Mohammad Hannon, File)