At least 33 Turkish soldiers have been killed in an airstrike carried out by Syrian government forces, officials in Turkey say.Thursday night's attack in Idlib marks a serious escalation in the direct conflict between Turkish and Russia-backed Syrian forces.The governor of Turkey's Hatay province, Rahmi Dogan, said: "None of our wounded soldiers who are being treated in hospital are in critical condition.

May our martyrs rest in peace."Alex Crawford's special report from IdlibAt least 54 Turkish soldiers have been killed in Idlib since the start of February - and Thursday was the deadliest day for Turkish forces since Ankara first intervened in Syria four years ago.Turkish President Recep Tayyip Erdogan has held an emergency security meeting in Ankara, and discussions have been held by phone with NATO's secretary general and America's national security adviser.The airstrike came after a Russian delegation spent two days in Ankara for talks with Turkish officials on the situation in Idlib, where a Syrian government offensive has sent hundreds of thousands of civilians fleeing towards the Turkish border.Last week, Sky News reported from inside Idlib, where more than 70 hospitals have been bombed out of action.Correspondent Alex Crawford said the scale of the humanitarian crisis is quite enormous - and one man told her "there is nowhere safe in Syria anymore".In response to Turkish fatalities, Mr Erdogan's communications director has said "all known" Syrian government targets are now under attack by Turkish air and land forces.Moment girls pulled from rubble after airstrikeThe soldiers were targeted in an area between the villages of al Bara and Baliun near the Jabal al Zawiya region in the southern Idlib countryside.According to the Syrian Observatory for Human Rights, at least 34 Turkish soldiers have lost their lives.Life on the move for Syrian childrenForces loyal to Syrian President Bashar al Assad now control almost the entire southern province of Idlib after capturing more than 20 villages on Thursday.Idlib is Syria's last rebel stronghold, and Assad's weekslong campaign has been backed by Russian air power.