TEHRAN, IRAN - SEPTEMBER 7, 2018: Russia's President Vladimir Putin, Iran's President Hassan Rouhani, and Turkey's President Recep Tayyip Erdogan (L-R) pose ahead of the third trilateral meeting aimed at facilitating peace process in Syria and held at an international congress centre in Tehran. Mikhail Metzel/TASS (Photo by Mikhail Metzel\TASS via Getty Images)
