BAGHDAD, Iraq - The U.S. military said Thursday that suicide bombings fell in November to their lowest level in seven months after joint U.S.-Iraqi operations west of the capital. In Ramadi, the U.S. military played down reports by residents and police of widespread attacks against American and Iraqi installations there, saying only one rocket-propelled grenade was fired at an observation post and there were no injuries. An AP Television News video showed the insurgents walking down a shuttered market street and a residential neighborhood, as well as firing four mortar rounds. The masked men, however, appeared relaxed, and the U.S....