Shiite cleric Muqtada al-Sadr on Monday refused demands from the interim Iraqi government to halt his militia's fighting in the holy city of Najaf. Experts discuss how the latest violence is affecting interim Prime Minister Iyad Allawi's efforts to guide…

The ceasefire between Coalition forces and Shiite militias in Iraq remains only ostensively after heavy fighting continued today in Najaf and Baghdad. Terence Smith gets an update on the latest violence from Washington Post reporter Pamela Constable in Baghdad.

Fighting in Iraq flared up again Thursday and threatened a two-month-old truce between Shiite militias and U.S. forces and the interim governments. Margaret Warner talks with two experts about the insurgency and the security situation for U.S. troops in Iraq.