The History of the Mongol Invasion

These historical arsonists burn down the world, generally not carrying how many people die or what else happens in their quest to remake things in their image. While people like Pinker might argue that we no longer have to worry about this archetype, they seem to be a fairly consistent feature of humanity. During Hitler's rise he was able to gain a significant amount of territory just by asking. How much more effective would he have been if he had threatened nuclear annihilation if he didn't get his way? Are we even sure we know all the ways that someone could use nuclear weapons?