This is the Trump coup against the United Nations, showing the world that one of their signature treaties was not really something that world body could or even cared to finish. Kim has been around, educated abroad, and certainly doesn't want to end up like all the former presidents in S.Korea. It will be interesting to see the voting in Korea after reunification. Will incorporation of the North prevent further presidents from corruption, simply because the stakes are too high to rip off the North who will vote as a block with like minded S.Korean's.
If the US/SK/Japan can build up the infrastructure in the North after reunification, world class medical facilities and living conditions might attract Snowbirds for retirement. I'm looking forward to a second there given the relative strength of the dollar. Go Trump/Kim.
I cannot imagine what a unified Korea would look like politically. How does a prosperous, free South unite on an equal voting basis with a people who have been far more oppressed than Eastern Europeans during the Cold War?
Do they all get one vote? How much money/welfare/reconstruction does the South have to put up? Is movement from North to South controlled or free? Can people from the South buy property in the North. If so, from whom? Who gets and who controls the missiles/artillery/warships? What role does an NK general have in the unified army. Same question for SK generals. How do you prevent a quick NK oriented coup against the unified government?
Unifying the US with Mexico would be far easier.
And, maybe most important, how does China react to a unified Korea on it’s border. A Korea that will be culturally dominated by Westernized Koreans.
I think not well.