The acquisition of Greenland is not beyond possibility. Along with the USA, China, and Russia are also interested..for obvious reasons.
It is not beyond reason that Denmark may not feel capable or interested in politically or militarily, fighting a major power over the territory..
Greenlanders claim they have been treatd as an "orphan child' by Denmark; so perhaps Greenlanders would feel more secure, being a territory
of the USA, and having jobs come there through mining , drilling etc.
Trump did not get to be a billionaire, because he scuttled his dreams before they could come to fruition !
https://www.youtube.com/watch?v=dDkrR9dTcKw Greenlanders welcome Don jr...
https://www.youtube.com/watch?v=sEM5bZM3mB4 Danish politicians say Greenland is not for sale...but political leaders in Greenland seem receptive to the idea..and it is the Greenlanders
who will decide.
