I'll be honest, these sort of long-term hostilities are well beyond the cognitive abilities of your garden variety ideologue, which is exactly what you are. The fact that you even talk about "nuclear holocaust" in the same sentence as North Korea demonstrates a profound ignorance of the situation, and lets others know that your opinion does not warrant a serious response. What is worse is pretending that world leaders are interchangeable cogs, and that it doesn't matter who is doing the deal - this is just willfully stupid, not merely ignorant.
Still, as a special favour to you, I will respond in good faith this one time.
When Trump implodes whatever "progress" he makes via emotionally charged and unstable Tweets, after reneging on one or more "agreements in principle," what impact do you think this will have on future peace talks with North Korea? Will this increase or decrease the ability of actual adult leaders to take concrete steps to resolve this situation?
Pulling back a bit, and assuming a more historical perspective, there are a few important questions: (1) what is North Korea's track record when it comes to these types of agreements, even after receiving significant concessions? and (2) of all the nuclear armed states in history, how many have given up their arms, and what is there current security situation looking like?
From a negotiating and dealmaking perspective, should making a concession like this, in exchange for nothing, at least require the input of the Pentagon... or perhaps even South Korea? You know, your ally? What is the impact of doing this without that input?
Honestly, stick to making subpar comments about domestic wedge issues. You are far out of your element, Fallout Boy.