U.S. Treading Carefully to Build Case Against Iran Over...

Aired: 10/13/2011 | 0:07:23 | Clip
American ambassadors around the world are alerting governments in their host nations about the ongoing investigation into the alleged Iran-backed assassination plot in the United States. Jeffrey Brown discusses the latest developments with Joby Warrick of The Washington Post and Daniel Brumberg of the U.S. Institute of Peace.