You believe in something which has never existed and will never exist. In international relations, there has never been anything besides "might is right". Anything else is an illusion. At most something that leaders pay lip service to, when it aligns with their own goals.

The law of the jungle is reality. World War II was won by terror bombing civilians. It is lamentable, but reality is reality. So to say "that's not how it works" is denying reality.