Syria’s anti-government rebels launched a massive offensive last week against the regime of President Bashar al-Assad. The offensive took most observers by surprise — especially as the rebels took control of Syria’s largest city, Aleppo. The Assad regime has responded by carrying out aerial attacks on Aleppo city and Idlib province. Host Marco Werman speaks with Natasha Hall, a senior fellow at the Center for International and Strategic Studies, about the rebels behind the offensive, how people are reacting in Aleppo and what potentially comes next in this escalation of Syria’s civil war.