U.S. Secretary of State John Kerry participates in a forum at the Harvard Kennedy School Belfer Center for Science and International Affairs, Tuesday, Oct. 13, 2015, in Cambridge, Mass. (AP Photo/Steven Senne) ** FILE **
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U.S. Secretary of State John Kerry participates in a forum at the Harvard Kennedy School Belfer Center for Science and International Affairs, Tuesday, Oct. 13, 2015, in Cambridge, Mass. (AP Photo/Steven Senne) ** FILE **
