A Kurdish peshmerga soldier who was wounded Sept. 30 in fierce battles in nearby Nineveh province with Islamic State group militants is brought to the Zakho Emergency Hospital in Dahuk, Iraq. Hadi Mizban/The Associated Press hide caption

itoggle caption Hadi Mizban/The Associated Press

An A-18C Hornet attached to Strike Fighter Squadron (VFA) 87, prepares to launch from the flight deck of the aircraft carrier USS George H.W. Bush (CVN 77) to conduct strike missions against Islamic State group targets. Robert Burck/AP hide caption

itoggle caption Robert Burck/AP

This still image was made from video released by the U.S. military on Tuesday that shows a building hit by a U.S. airstrike in Tall Al Qitar, Syria. The U.S. is describing the bombing campaign in Syria and Iraq as a counterterrorism operation and not a war. U.S. Central Command/AP hide caption

itoggle caption U.S. Central Command/AP

Thousands of Syrians enter Turkey at Yumurtalik crossing gate near Suruc on Tuesday. The United Nations High Commissioner for Refugees has warned of a growing refugee crisis. Burhan Ozbilici/AP hide caption

itoggle caption Burhan Ozbilici/AP

Islamic State fighters in the northern Iraqi city of Mosul parade through the streets shortly after capturing it in June. U.S. airstrikes have made the group wary and less visible, but the Islamic State still has control of Iraq's second-largest city. STR/AP hide caption

itoggle caption STR/AP