Go read this.

My favorite bit:

The history of appeasement does not change. Hitler was once a weak little man - and it was the concessions of the appeasers of his day that allowed him to grow strong. Once Saddam has his nuclear weapons, he will beat the drum of war. It will be a war that the new appeasers, like the old appeasers who rallied to Churchill after Hitler's first blitzkrieg, will bitterly regret that they did not fight when they had the chance to win

Go read the whole thing.