In this Aug. 10, 2016 photo, Iraqi Army Cpl. Saif holds a phone displaying a screenshot from a video released by the Islamic State group that shows his brother, in Irbil, Iraq. He claims the video showed his brother's execution. The disparate groups that make up Iraq's security forces are converging on the city of Mosul, lining up for a battle on the historic plains of northern Iraq that is likely to be decisive in the war against the Islamic State group. (AP Photo/Alice Martins)
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