It was pretty much a foregone conclusion that it would result in this at a certain junction. Earlier (and much more competent) administrations have already tried and failed.
Trump's boastful "if I meet with Kim in person I will make progress where no other president before managed to make progress, because I am THE DEALMAKER" was merely the usual blowhardiness we can expect from him.
Well, I'm glad Trump didn't cave here. He's an awful prez, but I'm not sure anyone in his position would have gotten a truly fair deal.
Pompeo was also on location and maybe he was the one who insisted towards Trump not to make any concessions? It's doubtful that Trump possesses the finesse to recognize when he's about to sell the farm.