Just because some nuclear armed countries pinky swear they won't strike first doesn't mean MAD is suddenly not needed... Even if every known nuclear weapon in

Just because some nuclear armed countries pinky swear they won't strike first doesn't mean MAD is suddenly not needed... Even if every known nuclear weapon in the world was decommissioned it'd likely still be needed, in today's dollars the Manhattan project was $30 billion. And you gotta assume modern technology and knowledge would make it quite a bit cheaper.