Iran's President Hassan Rouhani talks during a joint news conference with Turkey's President Recep Tayyip Erdogan, following their meeting at the Presidential Palace in Ankara, Thursday, Dec. 20, 2018. Rouhani said Tehran and Ankara are determined to continue cooperating in efforts to bring peace to Syria, a day after U.S. President Donald Trump announced his decision to pull out American troops from Syria, after declaring victory over the Islamic State group. (AP Photo/Burhan Ozbilici)