Well, if it were easy, it would already be being done!
Nobody seems to have gotten it right in the 1930's and we're just repeating the pattern with a new tinhorn dictator. Time to make another kind of mistake rather than just repeat the last ones.
To use the analogy of a criminal, criminals prey on the weak. Best strategy in fighting criminals? Don't be weak. The message to the criminal must be that there is no way to get away with it. Then they will find another victim or find another line of work.
I'm surprised you didn't come up with the "who says you're right" argument. That's the real tough one, because power tends to corrupt and you have to find a way to keep the powerful uncorrupted. I don't know how to accomplish that either.
Still, cooperation between civilized nations bringing total force against rogue nations, using force to obtain and enforce the peace is the best solution, although is is a flawed one, that there is.