Last week we wrote that Turkish President Recep Tayyip Erdogan was seeking a lifeline in Syria in his meeting three days later with Russian President Vladimir Putin in Moscow.
That lifeline came in the form of the 1998 Adana agreement between Ankara and Syria, which Putin considers a path to Turkish-Syrian coordination against terrorist groups, and which Erdogan sees as an open invitation to attack the People's Protection Units (YPG) in Syria. Turkey considers the YPG a terrorist organization linked to the Kurdistan Workers Party (PKK); the United States also labels the PKK as a terrorist group.