Syria - Thursday, Sept. 25

An Air Force KC-135 Stratotanker from the 340th Expeditionary Air Refueling Squadron, receives pre-flight checks before taking off in support of a mission to conduct airstrikes in Syria, Sept. 25, 2014.

Kurdish Syrian refugees camp at the Turkish-Syrian border near the southeastern town of Suruc in Sanliurfa province, Sept. 25, 2014.

Kurdish Syrian refugees stand in a truck at the Turkish-Syrian border near the southeastern town of Suruc in Sanliurfa province, Sept. 25, 2014.

Kurdish Syrian refugees carry their belongings after crossing the Turkish-Syrian border near the southeastern town of Suruc in Sanliurfa province, Sept. 25, 2014.

Residents buy bread in Tel Abyad town on the Syrian-Turkish border, Raqqa countryside, Sept. 24, 2014.

Syrian refugees wait for permission to enter Turkey at Yumurtalik crossing gate near Suruc, Turkey, Sept. 24, 2014.

Syrian refugees enter Turkey during a sand storm at Yumurtalik crossing gate near Suruc, Turkey, Sept. 24, 2014.

Residents inspect a damaged site after what activists say were four air strikes by forces loyal to Syria's President Bashar al-Assad in Douma, eastern al-Ghouta, near Damascus, Sept. 24, 2014.

A girl stands amid rubble after what activists say were four air strikes by forces loyal to Syria's President Bashar al-Assad in Douma, eastern al-Ghouta, near Damascus, Sept. 24, 2014.

Saudi pilots pose for a group portrait after taking part in U.S.-led coalition airstrikes on Islamic State militants and other targets in Syria, Sept. 24, 2014.