A U.S. Army Bradley armored vehicle rolls over a broken wall in the southern Iraqi city of Najaf, Aug. 22, 2004.
U.S. forces and Shiite militia engage in heavy fighting, as the standoff in Najaf drags on. In Nasariyah, an American journalist held hostage is freed. Elsewhere, four U.S. Marines die in clashes with Sunni insurgents. Hear NPR's Ivan Watson.