Russian President Vladimir Putin, right, and Turkish President Recep Tayyip Erdogan shake hands during their meeting in the Bocharov Ruchei residence in the Black Sea resort of Sochi in Sochi, Russia, Monday, Sept. 17, 2018. The presidents of Russia and Turkey are meeting in the Russian Black Sea resort of Sochi on Monday in a bid to find a diplomatic resolution to the crisis around a rebel-held region in Syria. (AP Photo/Alexander Zemlianichenko, Pool)