What do recent gains in Syria mean for the Islamic State?

Aired: 4/4/2015 | 0:02:28 | Clip
The Islamic State made important new gains this weekend in Syria, taking control of an area near Damascus. Part of what is driving the extremist group's success is the growing role of former officials from the once-dominant Baathist Party. Liz Sly, the Beirut bureau chief for The Washington Post, joins Hari Sreenivasan to discuss.