Earlier quoted context omitted.
Eritrea is right up there as well, but they don't have nukes, so nobody cares. https://en.wikipedia.org/wiki/Human_rights_in_Eritrea
On the other hand, should the stars align so that anyone cares, Eritrea is open to foreign intervention. Libya cancelled its nuclear program in the early 21st century and welcomed UN inspections. Then an international alliance force removed Gaddafi from power and he was killed. I am sure would-be-dictators all over the world are taking note - if you have nukes, you don't face invasion.
That said what keeps the west from invading NKorea aren’t the nukes. It’s the katyusha and other conventional armament that would rain down on Seoul a few Kms across the border.