“We do not support [the Turkish] operation in any way, shape or form, everybody from the president on down, was working on the safe zone implementation,” a senior State Department official told reporters Monday. “The president made it very clear that we would not support this operation in any way, shape, or form.”

The official said several dozen of the roughly 1,000 American troops in Syria have pulled back from their positions in northeast Syria, and that the U.S. has suspended work to implement a safe zone…

“The Department of Defense made clear to Turkey — as did the President — that we do not endorse a Turkish operation in Northern Syria. The U.S. Armed Forces will not support, or be involved in any such operation,” Assistant to the Secretary of Defense for Public Affairs Jonathan Hoffman said in a statement Monday.

European officials, who were caught off guard by the president’s announcement, are weighing options for addressing Trump’s criticism of their handling of the many foreign fighters from their countries who’ve been detained in Syria. Grisham’s statement Sunday night said Turkey would now be responsible for those captured ISIS fighters, shifting control from the Syrian Defense Forces aligned with the U.S.