what stops countries from secretly developing nuclear weapons?

Question

What I mean is that nuclear technology is more than 60 years old now, and I guess there is a pretty good understanding of how to build nuclear weapons, and how to make ballistic missiles. So what exactly stops countries from secretly developing them in remote facilities?

In: Other

Answer 1

Not much really. Certainly the can be foreign interference, but it’s mostly an economic and diplomatic question. Israel and North Korea likely did develop nuclear weapons.