BEIRUT—The ISIS terrorist group killed six U.S.-backed Syrian fighters in eastern Syria saying on Monday that the killing was in retaliation for an ongoing operation inside a sprawling camp housing tens of thousands of family members of the extremist group.
The ISIS-linked Aamaq news agency released a video showing the shooting of the six members of the Kurdish-led Syrian Democratic Forces near the eastern village of Ruwaished where they were captured alive and later shot dead late Sunday.