Simply put, the number of innocent people who are dead because we ousted Saddam is dwarfed by the number of innocent people who are dead because we didn’t. The use of American force is on one side of the ledger, and mass killing is on the other. Trends in military and media technology make this dilemma increasingly likely where belligerent murderers rule. You can keep your hands clean, or you can keep many more people alive. It’s up to you.