Assad troops' advance causing 'humanitarian crisis' - Erdogan
Turkish President Tayyip Erdogan has told Russia's Vladimir Putin that Syrian army attacks in north-west Syria are causing a humanitarian crisis and threaten Turkey's national security.
Syrian troops have encircled rebels and a Turkish military post in northwest Syria.
The military observation post near the town of Morek is one of 12 Turkey established in the region under a deal with Moscow and Tehran two years ago to reduce fighting between Syrian President Bashar al-Assad's forces and rebels. Turkey supports some rebel factions in the Idlib region, while Russia and Iran back Mr Assad.
Mr Erdogan told Mr Putin the attacks violated a ceasefire in Idlib and damaged efforts for a solution in Syria. He is to visit Moscow on Monday.
He also said he would discuss developments in a phone call with US President Donald Trump.