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Associated Press
Iraqi Kurdish forces head to battle Islamic State militants, on the summit of Mount Sinjar, in Iraq, Sunday, Dec. 21, 2014. Iraqi Kurdish fighters pushed their way Sunday into the town of Sinjar, backed by U.S.-led coalition airstrikes against Islamic State militants who captured the town last summer. Loud explosions and intense gunbattles were heard from inside the town. (AP Photo/Dalton Bennett)

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