World Waits for Evidence Assad Regime Used Chemical Weapons

Aired: 8/29/2013 | 0:06:03 | Clip
The world is waiting for United Nations inspectors to announce their findings over the alleged use of chemical warfare in Syria. What are inspectors looking for? And how would they be able to tell if the weapons came from the Assad regime? Jeffrey Brown gets analysis from former UN and U.S. weapons inspector Charles Duelfer.