An airstrike on a rebel training camp in northwestern Syria on Monday killed more than 50 Turkish-backed fighters and wounded nearly as many, a Syrian opposition spokesman and a war monitor said.
The airstrike in the northwestern part of Idlib province, the last rebel enclave in Syria, targeted a military training camp for Failaq al-Sham, one of the largest Turkish-backed opposition groups in Syria, said Youssef Hammoud, a spokesman for the groups.
The Britain-based Syrian Observatory for Human Rights, which monitors the war in Syria, gave a higher toll, at 78 fighters dead and nearly 90 wounded. Rescue missions were still underway, the Observatory said. It said it also suspected the airstrike was carried out by Russia, which is a close ally of Syrian President Bashar Assad in the country’s civil war.
Leaders of the camp were among those killed in airstrike in Jabal al-Dweila, according to Hammoud. The camp is close to the borders with Turkey.
Syrian rebel groups vowed to retaliate.