An Iraqi child walks next an empty house of a Christian family in Mosul on Aug. 8. The Arabic writing on the wall reads "Real Estate of the Islamic State." The extremist group took control of Mosul, Iraq's second largest city, in June. STR/EPA/Landov hide caption

itoggle caption STR/EPA/Landov

Peshmerga fighters inspect the remains of a car bearing an image of the trademark jihadist flag, after it was targeted by an American airstrike in the village of Baqouba, north of Mosul. The car reportedly belonged to Islamic State militants Ahmad Al-Rubaye /AFP/Getty Images hide caption

itoggle caption Ahmad Al-Rubaye /AFP/Getty Images