The whole Trump bluster about taking over Greenland is STOOOPID. Trump's claim of needing Greenland for National Security is a smoke screen, imo. And now he falls back on his favorite tactic for international diplomacy: Tariffs. Again, NOT the best idea; there are BETTER ways.
The US already has a military presence in Greenland and I do not see a REAL threat from China or Russia in the region.
Pituffik Space Base (/biːduːˈfiːk/, bee-doo-FEEK;[4] Greenlandic: [pitufːik]; IATA: THU, ICAO: BGTL), formerly Thule Air Base (/ˈtuːliː/, TOO-lee), is a United States Space Force base located on the northwest coast of Greenland in the Kingdom of Denmark under a defense agreement between Denmark and the United States. As of 2025, about 150 United States service members are permanently stationed there, after the United States significantly reduced its presence from 6,000 personnel during the Cold War.[5][6] Denmark was a founding member of NATO in 1949, and the 1951 Greenland Defense Agreement has allowed the United States to operate the base under a NATO framework, as long as both Denmark and the United States remain NATO members. Under the agreement, the Danish national flag must be flown at the base to recognize that the base is on Danish territory, but the United States is allowed to fly its own flag alongside the Danish flag on the facilities it operates.
The 1951 agreement was modified in 2004, giving the USA unrestricted access to the Pituffik base.[citation needed] Danish Prime Minister Mette Frederiksen has referred to this recently. If the Americans want to expand their military presence beyond that, they only must consult and inform the authorities in Nuuk and Copenhagen.
https://en.wikipedia.org/wiki/Pituffik_Space_Base
And, based on my Limited Read (and my NOT always great memory), ConfedSS may have the right historical perspective here:
Lessons From History: Themistocles Builds a Navy
October 2, 2014 Guest Author 1 Comment
This article is part of CIMSEC’s “Forgotten Naval Strategists Week.”
“I never learned how to tune a harp or play upon a lute but I know how to raise a small and obscure city to glory and greatness where to all kindred of the Earth will pilgrim.”
Thus spoke the great warrior politician Themistocles in the 5th Century B.C. Themistocles is famous for a lot of things: his heroic actions at the Battle of Salamis, his secret plot to rebuild Athens’ walls after the Second Persian War, and his six-pack abs in “300: Rise of an Empire” (author’s note: thoroughly underwhelmed by that movie). But his biggest impact on history was his fateful advocacy early in his career for Athens to build a first-rate navy. Themistocles should be recognized as one of the earliest naval theorists because he successfully promulgated a sea-view of the world and brought Athens onto the sea.
Athens has gone down in history as a naval powerhouse but that was not always the case. The city of Athens is actually a few miles away from the sea, could only offer up fifty ships during the First Persian War, and did not even have a defensible port until Themistocles’ rise to prominence. Athens was a continental city-state and a poor one at that; it had little to offer in terms of natural resources. The striking of silver in the mines of Laurium in 483 B.C. changed this. Athens was faced with a choice of how to divide up the windfall. The prevailing idea was to take the money and divide it equally among the population. Themistocles, apparently alone, proposed to use the funds to finance construction of a 200 ship fleet and managed to win over the population. The rationale behind his advocacy is controversial to this day: he claimed that the navy’s purpose was to challenge Athens’ island rival, Aegina, but others have attributed to him the base motivations of wanting to secure power or the foresight to see the invasion of Xerxes coming three years later.
Regardless of Themistocles’ true motivations, though the high-minded ones seem more plausible, his success is remarkable because it achieved a full reorientation of Athens’ politico-military focus from land to sea. (...)
History proved Themistocles right. The 200 Athenian ships, combined with his deft admiralship, were instrumental in defeating the Persians at the Battle of Salamis and, far more than the Battle of Thermopylae, turned the tide of the war in Greece’s favor. Moreover, once the Persians retreated across the Aegean Sea, Athens used its fleet to liberate the occupied islands and Ionian cities in modern Turkey. The new Athenian dependencies evolved into the Athenian Empire whose domination of trade in the Aegean launched Athens’ golden age. Their art and architecture are still the standard by which we judge all others classics.
https://cimsec.org/lessons-history-themistocles/
ConfederateSS.out!(The Blue and Silver Rebellion)... 
