The Kurdish-led Syrian Democratic Forces says it has agreed to withdraw more than 30km from the Turkish border, an announcement welcomed by Damascus which said Turkey should now end its "aggression" in northeast Syria.
Turkey launched its cross-border offensive on October 9 targeting Kurdish YPG forces in northeast Syria after President Donald Trump pulled US troops out of the area.
Turkish President Tayyip Erdogan and Russia's Vladimir Putin then agreed on October 22 that Syrian border guards and Russian military police would clear the border area up to 30km into Syria of YPG fighters over a six-day period that ends on Tuesday.
The YPG is the main component of the SDF and is viewed by Ankara as terrorists because of their links to Kurdish insurgents in southeast Turkey. But the SDF has been a key ally of the US in the fight against Islamic State militants.
Kurdish forces withdraw from from an area near Turkey's border with Syria. Source: AAP
"The SDF is redeploying to new positions away from the Turkish-Syrian border across northeast Syria in accordance with the terms of the (Erdogan-Putin) agreement in order to stop the bloodshed and to protect the inhabitants of the region from Turkish attacks," the SDF said in a statement.
It urged Russia to help ensure "a constructive dialogue" between the Kurdish-led administration in northeast Syria and the government of President Bashar al-Assad in Damascus.
Moscow is Assad's closest ally and Russian military power has proven decisive in helping him turn the tide of Syria's eight-year civil war and recover large swathes of territory.
The Sochi agreement allows Assad's forces to return to parts of the northern border with Turkey for the first time in years.
The Damascus government welcomes the SDF withdrawal which removes "the main pretext for flagrant Turkish aggression on (Syrian) territory", Syrian state news agency SANA said, citing a foreign ministry source.
The government will help citizens to re-integrate, SANA said, paving "the way for ... a return to Syrian national unity".
Under the Erdogan-Putin agreement, clinched in the Russian Black Sea resort of Sochi, Turkish and Russian forces will start patrolling from Tuesday a section of the Turkish-Syrian border that runs 10km deep into Syria.
On Saturday, Erdogan said Turkey would not hesitate to intervene again to clear YPG forces from the border area if Russia failed to fulfil its obligations under the Sochi deal.
SANA reported on Sunday clashes between the Syrian army and Turkish forces near to Ras al-Ain, a town in northern Syria on the Turkish border.
Turkey did not immediately confirm the clashes. Separately, the defence ministry in Ankara said one member of Turkey's military had been killed and five others wounded in the Ras al-Ain area on Sunday after a YPG rocket and mortar attack.
The military was conducting reconnaissance work and responded in kind to the attack, the ministry said.
