Iraqi militiamen, loyal to radical Shi'ite cleric Moqtada al Sadr, walk past columns of smoke rising over a cemetery in the southern city of Najaf August 11, 2004. U.S. marines said on Wednesday they were preparing a final assault on Iraqi Shi'ite militia in the holy city of Najaf, after a radical cleric ordered his men to keep fighting even if he was killed. REUTERS/Ali Abu Shish CLH/MD