ARBIL, IRAQ - JULY 19: Iraqi Christians family fleeing violence in the northern city of Mosul, arrive at Arbil on July 19, 2014. Hundreds of Christian families fled their homes in Mosul as ISIL threatening their community's centuries-old presence in the northern Iraqi city expired. The jihadists, who have run the city since a sweeping military offensive that began six weeks ago, had told the thousands of Christians in Mosul they could convert, pay a special tax or leave. (Photo by Dilek Mermer/Anadolu Agency/Getty Images)