tl;dr: The Russian leaders decided to give Cuba 100 nukes that were still left in Cuba and which the US hadn't taken notice of. But the russian diplomat Mikoya

tl;dr: The Russian leaders decided to give Cuba 100 nukes that were still left in Cuba and which the US hadn't taken notice of. But the russian diplomat Mikoyan was sane enough to see this was an insane plan and he was brave enough to stop it single handed. He made up a russian law that would forbid Russia to hand over nukes to foreign countries. The Cuban's swallowed it and the nukes were shipped back to Russia.