BEIRUT (AP) — Syrian insurgents have reached the suburbs of Damascus as part of a rapidly moving offensive that has seen them take over some of Syria’s largest cities across the country, opposition activists and a rebel commander said Saturday.

It was the first time that opposition forces reach the outskirts of the Syrian capital since 2018, when Syrian troops recaptured the region adjacent to the capital following a yearslong siege. It came after the Syrian army withdrew from much of southern Syria on Saturday, leaving more areas of the country, including two provincial capitals, under the control of opposition fighters.

The rapid advances by insurgents is a stunning reversal of fortunes for Syria’s President Bashar Assad, who appears to be largely on his own, with erstwhile allies preoccupied with other conflicts.

His chief international backer, Russia, is busy with its war in Ukraine, and Lebanon’s powerful Hezbollah, which at one point sent thousands of fighters to shore up his forces, has been weakened by a yearlong conflict with Israel. Iran, meanwhile, has seen its proxies across the region degraded by Israeli regular airstrikes.