The idea that America has suddenly lost its moral authority during the GW Bush administrations war on terror is fallacious. The US has conducted wars of aggression beginning with the war of 1812 (the US invasion of Canada). There is actual WW2 combat footage of USMC soldiers shooting and killing wounded Japanese soldiers. The Nurmberg War Crimes Trials tried to prosecute German Admiral Karl Doenitz for conducting unrestricted subramarine warfare in the Alantic. The charges were dropped when US Admiral Chester Nimitz told the tribunal that the US had conducted unrestricted subramarine warfare against the Japanese in the Pacific.So the struggle with moral issues during a time of war is not something new to America, but is an on going struggle that will present itself in every conflict.