Mistaken U.S.-Led Air Attack Threatens Syria Cease-Fire

The future of a partial cease-fire in Syria’s civil war plunged even deeper into doubt after an airstrike by the U.S.-led international military coalition mistakenly killed dozens of Syrian government troops on Saturday.

The attack further undermines an already delicate truce agreement that called for coordinated U.S.-Russian air campaign against ISIS and other jihadist groups following a weeklong reduction in violence which was set to be completed by September 19.