Dozens of fighters and civilians were killed in Syria's Idlib province as the government pressed a deadly offensive Thursday towards a key town in the country's last rebel bastion.

Russia and its allies halted air strikes in Syria's Idlib region on Sunday as a ceasefire agreed with Turkey came into force, residents, rebels and respondents said, although few were optimistic the truce would hold.

Turkey's Defence Ministry said on Friday that it had agreed with Russia that a ceasefire will be implemented on Sunday in northwestern Syria's Idlib region to stem the flow of civilians uprooted by the violence.

President Tayyip Erdogan said on Thursday up to 250,000 migrants were fleeing toward Turkey from Syria's northwest Idlib region after weeks of renewed bombardment by Russian and Syrian government forces.

Land-to-land missiles fired by Syrian regime forces killed eight civilians including four children in a school in northwestern Syria on Wednesday, a war monitor said.

The United Nations said 235,000 civilians had fled their homes in rebel-held northwestern Syria during a Russian-backed campaign of air strikes and shelling this month.

At least eight people, including five children, were killed Tuesday in Russian air strikes in northwest Syria, as the UN warned youngsters were bearing the brunt of the violence.

The number of Syrians fleeing attacks in the country's northwestern Idlib province and heading towards Turkey has reached 120,000, a Turkish aid group said on Monday ...

Air strikes by the Syrian regime and its ally Russia Saturday killed 12 civilians in the country's last major opposition bastion where a rise in violence has forced tens of thousands to flee.

Air strikes by Syrian government and Russian forces killed at least 20 people in rebel-held northwestern Syria on Saturday, activists and the Syrian Observatory for Human Rights said.

Regime air strikes Monday killed 10 civilians in Syria's last major opposition bastion, where deadly clashes between regime forces and armed groups have escalated

Two days of clashes between regime forces and armed groups in Syria's last major opposition bastion have killed nearly 70 on both sides, a war monitoring group said Sunday.