“Nukes will no longer be needed when all nations are free and have no fears of attack from another.”
Your conditions will never happen. Whether some far day centuries away all nations are ‘free’ (do you feel that free in the US now? I am not sure we were not much freer 20-40 years ago overall), resources and land are major areas of historic conflict and that isn’t going to change in any future time I can possibly speculate on.
Crazy ideas of national glory like the former USSR.
Don’t be so sure.
Democracy has spread like wildfire almsot overnight when you look at the long course of humnan history.
At any rate, we need nuclear weapons likely for quite some time to come.