Well, yes, the excuse that some other country's leader is a "maniac" or a "madman" sounds like a wonderful way to justify pre-emptively attacking a country which hasn't attacked you yet. It's been done before on several occasions, and people bought it every time. So why not do it again? Remember, when others do it...it's a war crime! But when you do it...it's justifiable defence against future aggression by "a maniac"! Who can argue with such impeccable logic as that?

Besides, that other guy may think the same way you do...and be planning something similar...that MANIAC! So go get him NOW. The world will be so grateful when you do.

(from Agenda A, section 12 of The Handbook on How to Start Wars of Aggression and Get Away With It....3rd Edition with an illuminating historical article by Josef Goebbels and additional commentary by Donald Rumsfeld)