In Karbala, U.S. forces attacked a mosque Tuesday in what the New York Times described as the largest assault against the forces of Shiite cleric Moktada al-Sadr so far. At least13 Iraqis died. But signs emerged that the U.S. and Sadr may be close to reaching a truce. The new U.S.-appointed governor of Najaf promised that court proceedings against Sadr would be suspended if he disarmed his militia. And U.S. General Martin Dempsey has proposed setting an Iraqi force that includes some of Sadr’s followers to patrol the Najaf.