Air strikes by the Syrian regime and its Russian ally on Sunday killed 14 civilians in the last major opposition bastion of Idlib in the country’s northwest, a war monitor said.

Moscow-backed government forces have upped their deadly bombardment of the jihadist-dominated region in recent weeks, chipping at its southern edge and causing tens of thousands to flee their homes.

Eight of those killed Sunday died in a regime barrel bomb attack in the town of Sarmeen, seven from the same family, the Syrian Observatory for Human Rights said.

Rescue workers pulled the bodies of a nine-year-old girl and a 13-year-old boy from the debris of a two-storey building. Their father, Abu Fida, stood by weeping. “It’s a terrible disaster,” he said.

Abu Fida said he and his family had fled bombardment on Sarmeen on Thursday, with just the clothes on their back.

They returned on Saturday night to collect their belongings, deciding to spend a last night at home before leaving for good.

“I wanted to get my family out this morning but my wife told me to go to work. So I sent them a driver with a car to transport their things,” but then aircraft hit the house, he said.

His wife was inside the house when it was struck, but he survived with three other children.

In the rest of the emballed bastion Sunday, Russian and regime air strikes killed another six civilians, the Observatory said.

The Britain-based monitor says it relies on sources inside Syria, and determines who carries out air strikes according to flight patterns, as well as the aircraft and ammunition involved.

Nine years into the war, the Damascus regime is back in control of around 70 per cent of the country, but the northwestern region of Idlib remains beyond its reach.

Syria’s former Al-Qaeda affiliate controls the Idlib region, home to some three million people, but pro-Ankara rebel groups are also present.

In recent months, pro-Damascus forces have pressed northwards along the M5 highway that connects the capital Damascus to second city Aleppo in the north, crossing Idlib.

Last week the government forces retook from rebels the key town of Maaret al-Numan along the highway and are now just several kilometres from the abandoned town of Saraqeb.

Clashes are also raging in the bastion’s eastern flank in Aleppo province, where state news agency Sana said four television journalists were wounded on Sunday.

The journalists for a pro-Damascus channel and two Arabic-language Iranian outlets were targeted by “terrorists”, Sana said, using its blanket term for jihadists and rebels.

A Turkish-Russian deal in 2018 saw Turkish troops deploy at observation posts around Idlib, but the agreement has failed to stem repeated regime military offensives.

On Sunday morning, an AFP correspondent and the Observatory said a Turkish military convoy of hundreds of vehicles entered northern Syria, deploying in Idlib and neighbouring Aleppo province.