(Reuters) – The U.S. military earlier this summer carried out an attempt to rescue journalist James Foley and other American hostages held in Syria, a U.S. official said on Wednesday, in an operation that the Pentagon said ultimately failed to find the captives. Foley, 40, was beheaded by an Islamic State militant in a video that surfaced on the Internet on Tuesday. President Barack Obama expressed revulsion on Wednesday at the execution and vowed the United States […]