Pentagon spokesman, Commander Sean Robertson said that any unilateral action into northeast Syria was of grave concern and "unacceptable," after Turkey announced that it would launch a new military operation in the region to target Kurdish militia fighters.
"Unilateral military action into northeast Syria by any party, particularly as U.S. personnel may be present or in the vicinity, is of grave concern. We would find any such actions unacceptable," Reuters cited the Pentagon spokesman as saying.
Robertson said that Washington was committed to Turkey’s border security but that the fight against ISIS was not over and the Syrian Democratic Forces remained a "committed partner" against the militant group.