Chiefs of powerful tribes that fight one another pledge peace deal . Previously vying for power , Muqtada al - Hassan , Abdul Aziz al - Hakim pledge peace . U.S. denies killing insurgents in raid on village near Baquba . U.S. soldier killed by bomb ; 6 insurgents killed in raids , U.S. military says .
Chiefs of powerful groups that fight one another forge peace deal . Previously vying for power , Muqtada al-Sadr , Abdul Aziz al-Hakim pledge peace . U.S. denies killing civilians in airstrike on village near Baquba . U.S. soldier killed by bomb ; 6 insurgents killed in raids , U.S. military says .