Russian President Vladimir Putin said on Thursday he had agreed a deal with Turkish President Tayyip Erdogan at talks in Moscow that he hoped would lead to a halt of military action in Syria's Idlib province.
Putin said his talks with Erdogan has lasted more than six hours.
Turkey and Russia said in a joint statement that both sides had agreed to establish a secure corridor along a key east-west highway in Syria's Idlib and hold joint patrols on it as of March 15 to ease tensions in the region.
In the joint statement read out by the Turkish and Russian foreign ministers, the two sides said the secure corridor would stretch 6 km (3.7 miles) to the north and 6 km to the south of the M4 highway. They said their defense ministers would agree on the parameters of the corridor within seven days.
The joint patrols will begin along the M4 from the Trumba settlement just west of the strategic town of Saraqeb, and run to the Ain al Havr settlement, the statement said.