Iraqi militants loyal to radical cleric Muqtada al-Sadr declared a holy war on all Americans in the Southern Iraqi town of Nasiriya. The rebel cleric has reiterated threats to stage suicide attacks against occupation forces targets in Iraq should they enter the holy cities. Meanwhile fierce clashes erupted between US forces and Iraqi militants loyal to Shia cleric Moqtada Sadr in the holy city of Najaf. Shia militants shelter in the cemetery, about three kilometres from the Imam Ali Shrine, close to where Mr Sadr has taken sanctuary.