This has literally been proposed since the very first meeting of the United Nations General Assembly. [1] The problem is that nuclear weapons are too attractive

This has literally been proposed since the very first meeting of the United Nations General Assembly. [1] The problem is that nuclear weapons are too attractive to powers with weaker conventional militaries. In the 40s, that meant the Soviets stalled until they had their own nukes. Today... well, see North Korea. Weaker powers will always develop and retain nuclear weapons, because it is too attractive to make it unthinkable for stronger powers to destroy them militarily. Conversely, stronger powers feel forced to maintain a deterrence force against these weaker powers. It’s really not clear there’s a way out of nuclear weapons until they’re used again. [1] https://en.wikipedia.org/wiki/Baruch_Plan https://en.wikipedia.org/wiki/Baruch_Plan