From left, Iran's Foreign Minister Hossein Amirabollahian, Russia's Foreign Minister Sergey Lavrov, Syria's Foreign Minister Faisal Mekdad, and Turkey's Foreign Minister Mevlut Cavusoglu pose for a photo before their meeting to discuss the diplomatic resolution of the Syrian conflict, in Moscow, Russia. A meeting was scheduled between the foreign ministers of Russia, Syria, and Turkey to resolve the differences between Ankara and Damascus. However, Turkish President Recep Tayyip Erdogan later allowed for the possibility of Iran's inclusion in the high-level talks planned between Turkey, Russia, and Syria.