President Barack Obama speaks about the capture of Libyan militant suspected of killing Americans in Benghazi, during his visit to TechShop in Pittsburgh, Pa., Tuesday, June 17, 2014. Obama says he authorized an operation in Libya to detain Ahmed Abu Khattala. His capture marks the first apprehension of an alleged perpetrator in the 2012 attack that killed U.S. ambassador Chris Stevens and three other Americans. (AP Photo/Pablo Martinez Monsivais)

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