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An Iraqi Kurdish security guard (Peshmerger) checks the ID cards of Iraqi families fleeing violence in the northern Nineveh province as they gather at a Kurdish checkpoint in Aski kalak, 40 kms West of Arbil, in the autonomous Kurdistan region, on June 11, 2014. Since the Islamic State of Iraq and the Levant (ISIL) began their spectacular assault in Mosul late on June 9, militants have captured a large swathe of northern and north-central Iraq, prompting as many as half a million people to flee their homes. (Photo by Safin HAMID / AFP) (Photo by SAFIN HAMID/AFP via Getty Images)