I thought he was just trolling them - apparently he was serious. So no reason to go all that way if there's no deal.An hour ago he tweeted that he is delaying a meeting with Denmark because the prime minister dismissed the idea that Greenland could be purchased.
Or maybe this is the Art of the Deal. Trump says, "Wanna sell?" and Denmark says, "No" in hopes of getting a better price, and instead of negotiating Trump says, "Okay " If we hear anymore about Denmark in the coming weeks we'll know they're biting.
Who knows. Sometimes Trump does things that make me go "???" and then it turns out that he had an ace up his sleeve.