Turkey's Erdogan to visit Russia on Aug. 27 - Turkish presidency

Turkish President Tayyip Erdogan will make a one-day official visit to Russia on August 27, the Turkish presidency said on Friday, hours after he held a phone call with Russia's Vladimir Putin to discuss developments in northwestern Syria.

In the phone call, Erdogan told Putin that an offensive by forces of Syrian President Bashar al-Assad, backed by Moscow, was causing a humanitarian crisis and posed a threat to Turkey's national security.