Turkey, Russia, Germany and France are holding a four-way summit on Syria in Istanbul on Saturday.   

During the summit, leaders of these countries will address the Syrian conflict in all its aspects, focusing on the situation on the ground, the Idlib agreement and to harmonize joint efforts to find a lasting solution to the conflict.

The leaders will also discuss the Sept. 17 agreement between Ankara and Moscow to establish a demilitarized zone in Syria's northwestern province of Idlib.

Meanwhile, Russian President Vladimir Putin spoke to Turkey’s President Tayyip Erdogan and France’s President Emmanuel Macron on the sidelines of summit in Istanbul today.

Kremlin spokesman Dmitry Peskov said the leaders will discuss developments in Syria’s rebel-held Idlib province and the political process for resolution of the conflict.