In this April 4, 2018 file photo, a U.S-backed Syrian Manbij Military Council soldier passes a U.S. position, in Manbij, north Syria.. (Photo: AP) Syria Syria Accuses SDF of Rocket Attack as Tensions Flare in Northern Region
In this April 4, 2018 file photo, a U.S-backed Syrian Manbij Military Council soldier passes a U.S. position, in Manbij, north Syria.. (Photo: AP)