Crisis in Iran; Afghanistan Update

Journalists Nico Pitney and David Ignatius comment on the violent government crackdown on Iranians protesting the contested election of Mahmoud Ahmadinejad. Thomas Ricks of the Center for a New American Security, Lt. Gen. David Barno, and counterinsurgency specialist David Kilcullen discuss the assignment of General Stanley McChrystal as new commander of the war in Afghanistan.