An explosion following an airstrike is seen in the Syrian town of Kobani from near the Mursitpinar border crossing in the southeastern town of Suruc, in Turkey's Sanliurfa province, on Wednesday. Yannis Behrakis/Reuters/Landov hide caption

itoggle caption Yannis Behrakis/Reuters/Landov

The family of Ibrahim Abid, who was killed when guards employed by security company Blackwater opened fire at Baghdad's Nisour Square in 2007, visits his grave on Dec. 9, 2008. Hadi Mizban/AP hide caption

itoggle caption Hadi Mizban/AP

Iraqi policemen patrol Abu Ghraib, 25 miles west of Baghdad, in June. Islamic State militants have captured many cities and town in western Iraq this year. The government still controls Abu Ghraib, but the militants are nearby and local tribes are also restive. Karim Kadim/AP hide caption

itoggle caption Karim Kadim/AP

Former Blackwater Worldwide guard Nicholas Slatten leaves federal court in Washington in June. Slatten on Wednesday was found guilty of first-degree murder in the deaths of 14 Iraqi civilians in 2007. Cliff Owen/AP hide caption

itoggle caption Cliff Owen/AP

Aza Betwata (left) and his brother Mirwan (center) left Holland to join the Kurdish peshmerga fighting against ISIS militants in northern Iraq. Though the brothers come from a family of fighters, Aza had just two days of training — his brother must show him how to strip and clean his rifle. Alice Fordham/NPR hide caption

itoggle caption Alice Fordham/NPR

A family passes through Maktab Khaled in northern Iraq, the last Kurdish checkpoint before they make their way to Kirkuk. ISIS-controlled territory lies less than a mile away. Leila Fadel/NPR hide caption

itoggle caption Leila Fadel/NPR