Hassan Abdul-Ghani, an insurgent commander, said fighters were heading from eastern and southern Syria towards Damascus
Islamist rebel group Hayat Tahrir al-Sham, a former al-Qaida affiliate, said on Saturday it has a duty to protect governmental, international and UN offices in Syria.
Meanwhile, in Doha, the UN special envoy to Syria, Geir Pedersen, urged “calm” and “avoidance of bloodshed”.