WH outlines key condition in Syria weapons plan

      |The CBS News Roundup: The White House says any plan involving Syria handing over it's chemical weapons must include a way to verify their removal; President Obama participated in the National Day of Service and Remembrance in honor of 9/11; Daimler unveiled its driver-less Mercedes at the Frankfurt International car show -- all this and more. Alexander Trowbridge reports on the news you need to know.