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An international security expert believes Turkish President Erdogan may have overplayed his hand in the ongoing conflict in Syria.
Smoke was seen in the skies near Idlib, Syria on Tuesday air strikes on the towns of Al-Bara, to the south of the city, and Balyun.
The warning came after 33 Turkish soldiers were killed by airstrikes in northern Idlib province on Thursday. Turkey has blamed Russia.
"Idlib is about to be the most catastrophic humanitarian situation in history," a Syrian White Helmets volunteer told Euronews.
A wave of displacement that has seen around 700,000 people flee a regime offensive in Syria's Idlib region is the biggest of the nine-year-old conflict, the United Nations said on Tuesday.
Turkey's foreign minister says Ankara and Moscow are working to keep peace efforts for Syria alive despite a deadly clash between Turkish and Syrian forces
Displaced Syrians flee towards the border with Turkey after an offensive by Syrian government forces in the rebel-held northwestern region, Idlib.
Hundreds of families fled their homes in northwestern Syria amid intense bombardment by Syrian government and Russian forces.
The kickaround was light relief for those in the region, which Syrian regime forces have been bombing in recent weeks.
Activists distribute Christmas presents to displaced Syrian children living in the Washukanni camp.
Troops taking part in 'Holiday Express' transported stockings stuffed with gifts to five bases in the country's east. A military band also travelled by helicopter, playing Christmas carols as the troops received their presents.
Turkish officals say they have captured the sister of dead Islamic State leader Abu Bakr al-Baghdadi in the northern Syrian town of Azaz.