Ali Larijani, the senior Iranian politician who visited Syria last month as Khamenei's special envoy, travelled to Damascus and met Assad to express Tehran's full support for him, according to Iranian MP Yaghoub Rezazadeh and the state-run Al-Alam TV.
The meeting was held as rebels have captured several cities in the country's north, east and south including Homs, Hama, Aleppo, Deraa, and Deir ez-Zor. Opposition activists and a rebel commander said on Saturday that the armed rebels have reached the suburbs of Damascus
The insurgents were active in the Damascus suburbs of Maadamiyah, Jaramana and Daraya, said Rami Abdurrahman, the head of UK-based war monitor Syrian Observatory for Human Rights.
Biden administration officials, watching the astonishing speed of the Syrian rebels' advance, increasingly see the possibility of Assad's government falling within days, CNN reported Saturday citing five US officials.
The advances come amid signs of from his key allies. Iranian-backed forces and the Syrian army have reportedly withdrawn from several positions, and there is little indication that Tehran is prepared to commit substantial forces to defend Assad.