FALLUJA, Iraq (Reuters) - The U.S. Marines besieging Falluja brought in a former Iraqi general with a history of standing up to Saddam Hussein (news - web sites) on Monday to lead a force they have charged with putting down an insurgency in the city. After outrage among victims of the Baathist regime at their appointment of a former general in his feared Republican Guard, U.S. commanders have now brought in another ex-general, Mohammed Latif, to take overall command of the Falluja Brigade. As U.S. commanders struggle to stamp out open rebellion in two cities and bombings that kill...