Russian President Vladimir Putin (R) shakes hands with Syrian President Bashar al-Assad during a meeting in the Black Sea resort of Sochi, Russia November 20, 2017. Picture taken November 20, 2017. Sputnik/Mikhail Klimentyev/Kremlin via REUTERS ATTENTION EDITORS – THIS IMAGE WAS PROVIDED BY A THIRD PARTY.

Russian President Vladimir Putin (R) shakes hands with Syrian President Bashar al-Assad during a meeting in the Black Sea resort of Sochi, Russia November 20, 2017. Picture taken November 20, 2017. Sputnik/Mikhail Klimentyev/Kremlin via REUTERS ATTENTION EDITORS – THIS IMAGE WAS PROVIDED BY A THIRD PARTY.