State Department: U.S. has proof Syria was behind gas attack

The U.S. State Department said Friday that the U.S. has proof that Syria was behind the alleged chemical weapons attack that left more than 40 civilians dead last week. Spokesperson Heather Nauert said officials are still trying to determine what kind of chemical was used in the attack.


(Source: CBS News, https://www.youtube.com/watch?v=84s8Y2FJJEM)