Dr Talat Amer, a surgeon at Sweida National Hospital in southern Syria, worked tirelessly for three days as bombs fell and the building came under siege from government and militia forces.

One woman tells the BBC she cowered in her home waiting for gunmen to enter and "decide whether we should live or die".

The interior ministry said clashes in Sweida city had been halted and the area cleared of Bedouin tribal fighters following the deployment.

Tom Barrack, who is the US ambassador to Turkey and Special Envoy to Syria and is aiding ceasefire talks, said the deal had the backing of Turkey, a key supporter of Syria’s interim president, as well as neighbouring Jordan.

Israel carried out strikes against Syrian government forces in southern Syria, saying it was acting to protect the Druze minority.

Israel carried out strikes against Syrian government forces in southwestern Syria for a second day on Tuesday, vowing to keep the area demilitarized and to protect the Druze minority as deadly clashes continued in the region at the Israeli frontier.

About 30,000 mostly Druze people are thought to be trapped inside the besieged city of Sweida and surrounding towns, with no electricity, little internet and dwindling supplies of food and water.