He's "Deputy Chair", a position given to him or created for him when he lost the race for Chair. It has no power.
There was what I think is called a "helper" comment saying that as for NK's nukes "their chord is broken".
The word that makes sense is cord not chord. The difference is the letter h.
From that I guessed that it was saying Kim's h-bombs are broken. Blown up under that mountain?
FWIW