In the context of NoK 'regime change', what on earth could follow Kim anyway? The entire nation seems completely indoctrinated/suppressed, so anyone sticking their hand up as a successor would surely only last 5 minutes.
And who would that person be anyway? A NoK General with his uniform covered in bottle tops? WHO could succeed, if Kim died of an overdose of cheese?
But ... I do half buy the concept of "You all back off and we will stop testing". Brinkmanship at it's finest, with Trump having a finger of the "ENOUGH" button. My fear, which I am sure is shared by many, is that Trump will launch a pre-emptive conventional strike against the NoK nuclear facility[ies].