Syria's new rulers stepped up engagement on Tuesday with countries that deemed ousted president Bashar al-Assad a pariah, with the French flag raised at the embassy for the first time in over a decade.

Assad fled Syria just over a week ago, as his forces abandoned tanks and other equipment in the face of a lightning offensive spearheaded by the Islamist Hayat Tahrir al-Sham (HTS).

The collapse of Assad's rule on December 8 stunned the world and sparked celebrations around Syria and beyond, after his crackdown on democracy protests in 2011 led to one of the deadliest wars of the century.

Rooted in Syria's branch of Al-Qaeda, HTS is proscribed by several Western governments as a terrorist organisation, though it has sought to moderate its rhetoric and pledged to protect the country's religious minorities.

Turkey and Qatar, which backed the anti-Assad opposition, have reopened embassies in Damascus, while US and British officials have launched communications with Syria's new leaders.

France, a key early backer of the uprising, sent a delegation to Damascus on Tuesday, with special envoy Jean-Francois Guillaume saying his country was preparing to stand with Syrians during the transitional period.

An AFP journalist saw the French flag raised in the embassy's entrance hall for the first time since the mission was shuttered in........

© International Business Times