You're right it's a tough call. But like that Muslim man who ripped into the ditzy anti-war protestor on that radio show (posted somewhere recently) said: "There will be deaths from this war. Some civilians will be killed, but there will be far less killed in this short time of war than would be if Sadam were left in power."
People who do not accept that man is fallen and sinful, cannot accept that "peace" among nations is forever elusive in this world. They cannot accept war, let alone the fact that war demands the deaths of innocents. I am not one of those people.