An uncharacteristically subdued Donald Rumsfeld tried yesterday to quell complaints he's insensitive to the sacrifice of G.I.s fighting and dying in Iraq. "I am truly saddened by the thought that anyone could have the impression that I or others here are doing anything other than working urgently to see that the lives of the fighting men and women are protected and are cared for in every way humanly possible," the defense secretary said at the Pentagon. "When I meet with the wounded, with their families, or with the families of those who have been lost, their grief is something I...