Smoke believed to be from an airstrike billows over the northern Iraqi town of Sinjar on Thursday, Nov. 12, 2015. Kurdish Iraqi fighters, backed by the U.S.-led air campaign, launched an assault Thursday aiming to retake the strategic town of Sinjar, which the Islamic State overran last year in an onslaught that caused the flight of tens of thousands of Yazidis and first prompted the U.S. to launch airstrikes against the militants. (AP Photo/Bram Janssen)
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