Edward Teller did apparently try and push for a 10 gigaton (!) bomb to be produced: https://www.rbth.com/opinion/2016/01/05/nuclear-overkill-the-quest-for-the-

Edward Teller did apparently try and push for a 10 gigaton (!) bomb to be produced: https://www.rbth.com/opinion/2016/01/05/nuclear-overkill-the-quest-for-the-10-gigaton-bomb_556351 https://www.rbth.com/opinion/2016/01/05/nuclear-overkill-the... Edit: Apparently this monster was the infamous "Backyard" bomb - "since that particular design would probably kill everyone on Earth, there was no use carting it anywhere."