Respectfully, this outcome (if it's being accurately described) seems liable to morph into a version of a Gitmo-in-hostile-Cuba situation and I would chalk it up as another Trump loss that gets bright-sided/silver-lining-ed/five-D-chess-ed/that-was-his-secret-goal-all-along-ed.

For now, Greenland is an autonomous thing under Denmark with Greenland having its own parliament and foreign relations being handled (mostly but not entirely) by Denmark but the island's official policy is that independence is the ultimate goal. It has very few people and nearly 90% of these are (speaking plainly) low-IQ Inuits with the usual Western-hemi-caveman social problems. The whole population is under 60k people but there are tiny and growing Filipino, Thai, and Chinese communities on the island. I can see a near-future independent Greenland voting in non-Danish, non-Inuit officials or with Inuit/Dane figureheads or bribe-recipients who enact something like an "open door policy" and cut deals with the US's geopolitical enemies that could run the spectrum from resource-extraction (fishing, minerals) with covert/denied military activity all the way to public/open non-US, non-EU military bases.

I'd been hopeful that Trump was really serious about getting Greenland, thinking that he might be trying to earn for himself a future version of the write-ups for the Louisiana Purchase, Seward's Folly (Alaska), etc. in current/recent US history texts. In retrospect, it seems like the Greenland stuff was at least halfway stirred up again to distract from his disappointing (and inexplicable) refusal to serve up the Epstein clientele for well-deserved prosecution and persecution and the shameful "release" of more chaff/slop/ultra-redacted pages.