A Bahraini armored personnel vehicle and personnel reinforce U.S. Embassy security just outside of a gate to the building in Manama, Bahrain, on Sunday, Aug. 4, 2013. Security forces cl

 

              A Bahraini armored personnel vehicle and personnel reinforce U.S. Embassy security just outside of a gate to the building in Manama, Bahrain, on Sunday, Aug. 4, 2013. Security forces cl
A Bahraini armored personnel vehicle and personnel reinforce U.S. Embassy security just outside of a gate to the building in Manama, Bahrain, on Sunday, Aug. 4, 2013. Security forces close access roads, put up extra blast walls and beef up patrols near some of the 21 U.S. diplomatic missions in the Muslim world that Washington ordered closed for the weekend over a ``significant threat'' of an al-Qaida attack. (AP Photo/Hasan Jamali)