Wars were never, ever, sort-of-kinda justified. War is the tools for elite mafias to fight among them and the "peasants" should never take part in those fights. At least, a long time ago, the elites would go to fight them themselves (with their conscripts of volunteers). Modern wars are just business.

I wonder why, if leader A has a problem with leader B, do not they go and fight one another? It would be the less costly solution for the maximum result, would it not. That is, if the reasons for wars were real.

The only reason for war is war itself, for war is a racket and it will always be as long as the we "peasants" continue to finance them and take part in them