I guess we will see how good a negotiator Trump is,, as they match wits, and make their moves. So far I think Kim has got the upper hand because, he knows Trump's weaknesses or at least his advisors do. Trump's "Art of the Deal" should give his opponent a clear advantage.
https://en.wikipedia.org/wiki/Trump:_The_Art_of_the_Deal
The book tells about Trump's childhood in Jamaica Estates, Queens. It then describes his early work in Brooklyn prior to moving to Manhattan, whereupon he engaged in building The Trump Organization. It then describes his actions and thoughts in developing the Grand Hyatt Hotel and Trump Tower, in renovating Wollman Rink, and regarding various other projects.[7]
The book also contains an 11-step formula for business success, inspired by Norman Vincent Peale's The Power of Positive Thinking.[8] Trump's steps are:[9]
Protect the downside and the upside will take care of itself
Maximize your options
Know your market
Use your leverage
Enhance your location
Get the word out
Fight back
Deliver the goods
Contain the costs
Have fun
Think big