I actually think the Chicoms are the turd in the punch bowl here. They probably do want the Norks to denuke but that is about it, no end to the war and no normal relations with the US. Rocket man may want more and the Chicoms will push back against him. They are using the Norks as a thorn in our sides as they have since 1953, but they just don’t want the nukes because in the long run the Japanese and South Koreans will develop their own nukes and the Chicoms and no one else in the area want the Japanese with nukes.
Japan and South Korea are both one screwdriver turn from nuclear weapons. If countries as poor and primitive as Pakistan and North Korea have them, you know this is true. Then Saudi Arabia wants them because Iran has them. Then more European nations feel they need them because of Russia. On and on.