Syrian government forces advance on Aleppo. Deborah Lutterbeck reports.
This is Aleppo now. Ripped open streets -- fractured buildings -- once the commercial hub of Syria. Video released by the Syrian Army shows troops on the move in a years long battle for control of the city The city, Syria's largest before the war, has seen an escalation of fighting after peace talks and a fragile ceasefire broke down earlier this year. Rebels holding out say they have stockpiled enough basic supplies to survive months of siege by pro-government forces that cut off their half of the city last week. The U.S. Ambassador to the UN Samantha Power said President Bashar al- Assad's attempts to encircle eastern Aleppo would have "potentially devastating consequences." Its capture would be a strategic prize for Damascus, which now controls major population centers in western Syria, apart from rebel-held areas of Aleppo, and the city of Idlib.