So is it the use of weapons of mass destruction that makes someone "evil"? Were the people who helped him along the way also "evil"?
I honestly do not understand this term evil. Are you saying that he is a psychopath? For me the question has more to do with how many people will be killed and by whom. As I think of war more like a disease. Assuming you are right what is the best course of action right now? I don't think all out war is necessary at this moment.