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FILE - In this Sept. 13, 2012 file photo, a Libyan man investigates the inside of the U.S. Consulate, after an attack that killed four Americans, including Ambassador Chris Stevens on the night of Tuesday, Sept. 11, 2012, in Benghazi, Libya. The State Department on Tuesday, Oct. 9, 2012 said it never concluded that the consulate attack in Libya stemmed from protests over an American-made video ridiculing Islam, raising further questions about why the Obama administration used that explanation for more than a week after assailants killed the U.S. ambassador and three other Americans. (AP Photo/Mohammad Hannon, File)

Associated Press
FILE - In this Sept. 13, 2012 file photo, a Libyan man investigates the inside of the  U.S. Consulate, after an attack that killed four Americans, including Ambassador Chris Stevens on the night of Tuesday, Sept. 11, 2012, in Benghazi, Libya. The State Department on Tuesday, Oct. 9, 2012 said it never concluded that the consulate attack in Libya stemmed from protests over an American-made video ridiculing Islam, raising further questions about why the Obama administration used that explanation for more than a week after assailants killed the U.S. ambassador and three other Americans. (AP Photo/Mohammad Hannon, File)
FILE - In this Sept. 13, 2012 file photo, a Libyan man investigates the inside of the U.S. Consulate, after an attack that killed four Americans, including Ambassador Chris Stevens on the night of Tuesday, Sept. 11, 2012, in Benghazi, Libya. The State Department on Tuesday, Oct. 9, 2012 said it never concluded that the consulate attack in Libya stemmed from protests over an American-made video ridiculing Islam, raising further questions about why the Obama administration used that explanation for more than a week after assailants killed the U.S. ambassador and three other Americans. (AP Photo/Mohammad Hannon, File)
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