Quoting someone who is being dishonest, "You do not understand what I am saying."
I certainly do understand what you are saying. You are telling lies.
Quoting the same someone, "I know Park was president of South Korea at the time and was replaced by Moon in 2017."
You know that now. You did not know it until I taught you that Moon came along AFTER Obama. See, Moon could not have teamed up with Kim to lead Obama to a deal, as YOU ineptly wrote. You really did not know what you were talking about. You do not know the subject well enough to make intelligent comment. And THAT is your problem right there.
Quoting again, "President Trump started this process when Park was president and continued it when Moon became president later in 2017."
You are making this up out of whole cloth to suit you own political mythology. Understand that your worship of a particular North American political ideology is not an adequate substitution for knowledge of a subject or for possession of fact. You are only fooling yourself with this nonsense.
Quoting, "My point is if this is so easy why did Obama start this process with Park?"
Who said it was easy? That's your ignorant smoke blowing right there. For goodness sake, at least TRY to stop yourself.
If you knew about Korea you'd be aware that Park was a satrap who got kicked out of office for corruption. At that point the US govt started to lose control of the situation in the South. The population has been getting fed up with US military in the country and with US govt policy. The ill will has been steadily growing locally and lately was expressed by the population when they rebelled against foreign political domination by electing Moon, a human rights lawyer keen to seek peace with the North (for the reasons previously posted) and, significantly, a Catholic (and if you knew much about Catholicism in Korea you'd be well aware of the significance of that).
If you knew about Korea, you'd have known that Kim didn't have a proved deliverable nuclear deterrence capable of hitting US targets until July 2017. You'd know that China didn't deliver its warning against US attack on the North until August 2017 (in essence a security guarantee to North Korea). You'd know that Russia issued similar warnings against the US in September 2017. You'd know that the UN representatives of both countries then reiterated “the four nos"- no regime change, no regime collapse, no accelerated reunification, no US military deployment north of the 38th parallel dividing the Korean Peninsula.
You'd also have known to routinely read the English language editions of "The Global Times", "The Straights Times" and other sources FROM THE REGION. You'd have seen the severe comments from Chinese high-ups such as Lt General Wang Hongguang. You'd know the significance of The Global Times and what it chooses to report. You'd know who the General is and what post he holds and why what he says is important (what it means and who it represents). You'd know to be watching reports from RT. You'd know to read the releases from the Kremlin attributed to President Putin. Most importantly, you'd be well familiar with the North Korean view by reading Pyongyang's releases (conveniently available in English so you do not even have to learn to read Korean!). You'd definitely know all about this next quote. It is the official Chinese govt position. “If the U.S. and South Korea carry out strikes and try to overthrow the North Korean regime and change the political pattern of the Korean Peninsula, China will prevent them from doing so.”
It was the combination of these occurrences, as well as accelerated military preparedness exhibited by Russia and China in their Eastern regions from November 2017 until around March 2018, which forced the realisation on the US govt that there is no military solution against North Korea, not unless war is the objective (along with millions of deaths and an economic depression). Check the timeline. It is clear what happened and in what order. It is clear what the consequences were and when they were recognised by each party. Look, once Kim had his deterrence in place he was able to stare down US govt belligerence and negotiate on an equal footing. Until Kim had his deterrence in place he was unable to negotiate against the US govt. He was too weak. There was no deal on offer for him. He was doomed (who knows, he may still be). His proof of reasoning was in how he had been treated by your mate Obama. Once he altered the balance, then the situation dramatically changed (and, for him, it was for the better).
Final point you'd have known. The relationship between China and North Korea is not that of allies in the sense of, say, the USA and the UK. The two countries have some interests which are aligned, but there is also a lot of difference and a lot of history between them (not all good either). There is a wary support, but limited trust. There is a lot to this relationship. It takes a while to get a handle on it. Let's best say that still waters run deep.
But, of course, you do not know. All of this is alien to you.
Quoting, "If you want to deflect so be it."
You are the one doing the deflecting. You try to wriggle out of what YOU wrote. Trouble for you is, you can't do it.
Time to demonstrate some honesty and integrity. When you do not know something, admit it- at the least admit it to yourself. Then, don't bullshit about it, go learn the subject instead.