- Tag results for Bashar al-Assad
Russia said it would supply the Syrian army with an S-300 air defence system and would jam radars of hostile warplanes.
President Bashar al-Assad has now set his sights on Idlib, and his forces have stepped up bombardment of the densely populated province since the beginning of the month.
The region has been hit by a wave of air strikes and shelling this month in a possible prelude to a full-scale government offensive.
Hayat Tahrir al-Sham (HTS) chief Abu Mohamed al-Jolani spoke after President Bashar al-Assad warned that he aimed to retake control of the northwestern province on the Turkish border.
Some 60 per cent of the northwestern province is controlled by the jihadist alliance of Hayat Tahrir al-Sham, led by Syria's former Al-Qaeda affiliate.
Israel's defence minister described Syria's return to its pre-civil war situation as a given on Thursday, and predicted that the Golan Heights frontier would be quieter.
Last week, Syrian state media said Israeli rockets had struck a Syrian military position near Nairab airport on the outskirts of the city of Aleppo.
Starting on Wednesday morning, a series of barricades on the road leading into the towns were removed to let dozens of buses in.
Assad's Russia-backed forces have advanced in southwest Syria and are on course to reach Quneitra, a rebel-held district abutting the Golan Heights frontier with Israel.
Russia-backed regime forces have been preparing an offensive to oust rebels from Syria's south, a strategic area bordering Jordan and the Israeli-occupied Golan Heights.
President Bashar al-Assad has set his sights on retaking rebel-controlled parts of southern Syria.
President Bashar al-Assad has set his sights on retaking rebel-controlled parts of southern Syria, whether through negotiations or a military operation.
Bashar al-Assad has said that talks led by Moscow on the future of the south of the country were ongoing, but warned that Israel and the United States were preventing a negotiated settlement.
Moscow intervened militarily in Syria's conflict in 2015, when Assad's forces were struggling to hold territory against rebel fighters.
German prosecutors have issued an international arrest warrant for a top Syrian intelligence officer accused of overseeing the torture and murder of hundreds of detainees.