Web only: The author of 'A Deadly Mix in Benghazi'

A lengthy investigation by The New York Times finds no evidence that al Qaeda was involved in the 2012 attack in Benghazi, Libya. The report also finds that the attack on the mission was fueled largely by anger over anti-Islam video. The author of "A Deadly Mix in Benghazi," David A. Kirkpatrick, spoke with Hari Sreenivasan about the story that's dominating the Sunday news shows.