I do not question the effectiveness of deterring with nuclear weapons. It would be great if Ukraine had nuclear weapons... for now. How long till a nation state

I do not question the effectiveness of deterring with nuclear weapons. It would be great if Ukraine had nuclear weapons... for now. How long till a nation state becomes unstable. How long can any entity remain in control of itself. Hell, I don't trust my own country the US to have these weapons and we have the longest track record of not ending the world. But at some point there will be revolution on every country. My source is all of human history. One radical group getting ahold of these weapons with actual intent to use them is all it takes to change the face of the world.