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GEVGELIJA, MACEDONIA - DECEMBER 03: Refugees from Iraq, Syria and Afghanistan who were allowed to cross border, enter Greece from the southern Macedonian town of Gevgelija on December 03, 2015. (Photo by Besar Ademi/Anadolu Agency/Getty Images)

GEVGELIJA, MACEDONIA - DECEMBER 03: Refugees from Iraq, Syria and Afghanistan who were allowed to cross border, enter Greece from the southern Macedonian town of Gevgelija on December 03, 2015. (Photo by Besar Ademi/Anadolu Agency/Getty Images)