The United Nations has reiterated its appeal for a halt to hostilities in northwest Syria, saying it fears that the violence "may end in a bloodbath".
Some 60 per cent of the 900,000 people who have fled but are trapped in a shrinking space are children, OCHA spokesman Jens Laerke told a Geneva news briefing.
The "relentless violence" must stop before it degenerates into "what we fear may end in a bloodbath", he said.
Turkish President Tayyip Erdogan has asked the French and German leaders to provide "concrete" support in ending a humanitarian crisis in northwest Syria's Idlib region.
In a phone call, Erdogan said that attacks in Idlib, where a Russian-led Syrian government offensive has displaced hundreds of thousands of people and brought Ankara, Moscow and Damascus to the brink of confrontation, must be stopped.
On Thursday, French President Emmanuel Macron and German Chancellor Angela Merkel called Russian President Vladimir Putin to express their concern about the humanitarian situation in Idlib, urging an end to the conflict there, a German spokesman said.
Australian Associated Press