beirut u.s.-backed campaign islamic state eastern syria accelerate jihadist group defeat former capital raqqa spokesman u.s.-allied syrian militias say wednesday syrian democratic force sdf announce defeat raqqa tuesday redeploy fighters city frontlines islamic state eastern province deir al-zor talal silo tell reuters telephone islamic state already lose grind rapidly deir al-zor last region significant foothold syria sdf syrian government back russia iran fight separate campaign group silo say raqqa victory would positive impact sdf campaign deir al-zor mean fighters could redeploy internal security force take control raqqa military force head towards areas continue participation campaign deir al-zor military council say council militia lead sdf campaign province benefit campaign accelerate end campaign say sdf campaign focus areas east euphrates river bisect deir al-zor province government campaign focus mostly areas west river u.s.-led coalition russian military hold face-to-face deconfliction meet prevent inadvertent clash plan troop respective command though campaign occasionally come conflict near euphrates river syrian army ally battle control last remain is-held areas deir al-zor city also recently capture town al-mayadin u.s.-led coalition say would push deir al-zor province clear remain islamic state fighters plan sdf fighters move deir al-zor city goal defeat islamic state iraq syria still areas hold territory clear areas col. ryan dillon coalition spokesman say last major islamic state-held town deir al-zor albu kamal last syrian town iraqi border u.s.-backed campaign eastern syria speed sdf militia