Iraq Update: Shi'ite Militias
Iraqi army forces had their first major clash with Shi'ite militias in the southern city of Diwaniyah earlier this week. The fighting was seen as a sign of the increasing strength of anti-U.S. cleric Moqtada al-Sadr's Mahdi Army militia. A panel talks about what's behind the latest spasm of violence.
professor of modern Middle East history at the University of Michigan; his blog is "Informed Comment"
director of the Middle East program at the National Endowment for Democracy and former spokesman for the Iraqi interim government of Ibrahim al Jafari
Baghdad bureau chief for the Washington Post