You see #13, 14?
NK does not have a deliverable nuke, period. They may, years from now. Their nuke yields have been very poor so far. One detonation was so weak, we couldn’t tell if the critical mass yield was greater than the explosives needed to set it off.
It is all about a missiles range and payload. The bigger the payload, the shorter the range, etc.
So far the NK nukes are so heavy they have to carry them by rail car. Their best missile has a 250 pound payload.
NK would need some very high tech critical mass reflectors to get any where under 1000 pound payload.