When I talk about revenge, I'm talking about interpersonal beefs. Some guy kidnapped and killed your spouse or something, I'm not going to say it's bad if something were to happen. Morally, I don't care. Legally of course that is to be frowned upon for obvious reasons regarding death penalty and right to a trial.

Large scale politics is not revenge. It is class war. It is strategic calculation and victory, seizure of what is ours and restoration of justice.