People may employ defensive force to thwart an act of aggression while it is in progress,
I agree, self-defense is good, that's what the 2nd Amendment is for.
and retaliatory force to rectify a completed act of aggression by securing just compensation from the aggressor.
But legalizing plundering expeditions against anyone you think harmed you would put society on the fast track to feudalism.
Sigh. It's be nice to vote for someone instead just against.