Turkey’s President Recep Tayyip Erdogan, right, shakes hands with Turkey’s Prime Minister Binali Yildirim, left, prior to their meeting in Ankara, Turkey, Monday, Feb. 19, 2018. Turkish officials say Erdogan held a telephone conversation with his Russian counterpart Vladimir Putin on Monday, during which the two reaffirmed their determination to cooperate and act in coordination in the fight against “terrorism” in Syria. The two leaders spoke as Syrian state media reported that pro-Syrian government forces will begin entering Afrin. (Kayhan Ozer/Pool Photo via AP)