ok, assuming you mean that nuclear war is the threat to all civilizations (because once we advance to the point of developing nukes, eventually some asshole dep

ok, assuming you mean that nuclear war is the threat to all civilizations (because once we advance to the point of developing nukes, eventually some asshole deploys them irrationally).. why isn't this a solved problem? I.e: create underground societies that are nuclear-powered and sustainable for centuries, and impervious to nuclear attack?