ERBIL, IRAQ - DECEMBER 07:  Iraqi Christian chidren play in the grounds of Mar Elias Catholic Church, in Ankawa, that has now become home to hundreds of Iraqi Christians who were forced to flee their homes as the Islamic State advanced earlier this year, on December 7, 2014 in Erbil, Iraq. Although the autonomous Kurdistan region of Northern Iraq was already a refuge for an estimated 250,000 Syrian refugees, since the Islamic State began its onslaught on Iraq in June, Kurdistan has also taken in a more than one and a half million displaced people. Many have been placed in purpose-built refugee camps but the huge numbers mean thousands of others are forced to live in un-finished buildings or inadequate, makeshift shelters and as winter in the region closes in, there are growing concerns for the welfare of the refugees who, while their homes are still in ISIL controlled territory, have no realistic prospect of returning to them.  (Photo by Matt Cardy/Getty Images)