Turkish President Recep Tayyip Erdogan and his Russian counterpart Vladimir Putin discussed recent developments in Syria over the phone on Wednesday, according to the Turkish Communications Directorate.

Apart from Syria, the two leaders spoke about bilateral ties and regional issues.

On Oct. 9, Turkey launched Operation Peace Spring to eliminate terrorists from northern Syria, east of the Euphrates River, in order to secure Turkey’s borders, aid in the safe return of Syrian refugees, and ensure Syria’s territorial integrity.

Read more: Turkish, Russian presidents talk Syria, other issues