Turkish President Tayyip Erdogan flew to Moscow on Thursday for talks with Russia's Vladimir Putin over a potential ceasefire in Syria's Idlib, where their militaries are facing off in a war that has displaced nearly a million people in three months.

A senior Turkish official told Reuters that a ceasefire was likely to be finally agreed at the meeting, after weeks of diplomacy failed to halt fighting between Turkey and allied Syrian rebels and Russian-backed Syrian government forces.