Interesting story of Setsuko Thurlow.  Her aversion to nuclear weapons is especially understandable.
Realistically, only a child would believe that the world is going to voluntarily give up nuclear weapons.  Or that the western democracies should "set a good example" by doing so unilaterally.
Some believe the "One Ring" was a literary device used by JRR Tolkien to symbolize nuclear weapons.  It would be wonderful if these weapons could all be somehow "unmade". Unfortunately real earth is more complicated than Middle Earth.