After more than six hours of talks, Russian President Vladimir Putin and Turkish President Recep Tayyip Erdogan emerged in Sochi, Russia, on Oct. 22 with an agreement to establish a "Syria Safe Zone" along the Syrian-Turkish border. While the agreement serves the interests of both Moscow and Ankara, the other parties involved in northern Syria will find much to dislike about the deal — something that will cloud its implementation. The Winners The agreement is a significant victory for Ankara, as it cements the Turkish military's gains as part of Operation Peace Spring between the towns of Tal Abyad and Ras al-Ayn and stipulates the withdrawal of the People's Protection Units (YPG) from nearly all the remaining areas of the border up to a depth of 30 kilometers (18 miles). In their place, joint Russian-Turkish units will begin patrolling up to a depth of 10 kilometers from the border.