FILE - In this Aug. 10, 2014 file photo, an aircraft lands after missions targeting the Islamic State group in Iraq from the deck of the U.S. Navy aircraft carrier USS George H.W. Bush in the Persian Gulf.
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In the eastern part of Syria, forces backed by the U.S. and its allies say they are pushing ISIS back. And U.S. officials say those forces are becoming more cohesive, and in turn more successful.