Syria’s rebels seized most of Aleppo on Saturday as their sweeping advance ousted Russian forces from at least three military bases around the city. Opposition fighters raced through Aleppo, Hama and Idlib provinces in a lightning advance that has stunned Bashar al-Assad’s regime.

Thousands of Syrian insurgents have fanned out inside Syria’s largest city Aleppo a day after storming it with little resistance from government troops

The Hayat Tahrir al-Sham rebel group in Syria has taken control of much of Aleppo city after local forces withdrew to organize a counteroffensive to retake Aleppo.