US must be well informed about EU critters phone conversations among themselves. So EU will not go against US.
Some people in Deep State are behind all of this, not just the Orange.
But I wish Denmark does all of that.
One need not eaves drop on telephone conversations to understand treaties and the text of alliance agreements. If Trump attacks Greenland then Nato's Article 5 kicks in.
Of course I wouldn't expect YOU to understand the concept of a country being expected to uphold their signed written agreements.
I think Trump is testing whether or not NATO has any resolve. It's clear that Trump has no respect for the EU or NATO. And there's nothing the European navies have that can stop USA. Trump knows it and Denmark knows it. If there's a fight it'll be the kind of fight Putin hoped Russia would have in Ukraine, but didn't. The biggest price will be that USA will be a pariah state and joins the Axis of Evil countries. But Trump may not care about that.
If there's a land war on European soil the European countries will most likely win against USA. But in the arctic... nope. Not a chance.
Land war in Europe? The US military isn't set up for a land war in Europe. It'd take a while to even mobilize the fight. And last time we did, the coastal areas were on the same side.
The US easily can take Greenland. But I imagine it'll be a scorched Earth maneuver. It'd be costly, deploying troops to occupy a small area isn't cheap, even if there is no violence. Losing health care will make the locals angry, something would happen. And in Congress, there would be a need to authorize spending for the occupation. That won't happen in the Senate. It'll be filibustered to the ground.
Trade relations will evaporate, Europe will turn to China. It'll isolate the US, which is exactly what Russia would love. Of course, if Europe turns to China, that isn't exactly in Russia's favor either, but unlike China, Russia doesn't have much of a forward focus. It is the only nation that looks to the future in the past.
Finally, just because the US military takes Greenland doesn't mean the US has Greenland. International law would get really weird if the part of the Government doesn't recognize the US owns Greenland.