Turkish President Recep Tayyip Erdogan and US counterpart Donald Trump discussed the crisis in Syria during a telephone conversation, officials said.
Erdogan and Trump "exchanged views on the latest developments in Syria," a Turkish presidential source said, without providing further details.
The White House later confirmed the call and issued a brief readout.
The pair spoke "to discuss the current crisis in Syria," it said, adding: "The two leaders agreed to stay in close contact about the situation."