The Last Word with Lawrence O'Donnell 09/11/13

Putin: Chemical weapons used by Syrian rebels

MSNBC's Lawrence O'Donnell talks to Gary Samore, President Obama's former White House coordinator for arms control and weapons of mass destruction, The Atlantic's Steve Clemons, and MSNBC's Krystal Ball about Russian President Vladimir Putin’s New York ... more Duration: {{video.duration.momentjs}}