But who is it that cares about US interests in this context? The billionaires aren't really rooted in the US; they have assets and control resources around the world. NATO enforced control is good for them, I would think ; and there's literally nothing stopping the US from using its own base already in Greenland to project power throughout the arctic. Attacking Greenland will destroy NATO. The destruction of NATO will push the Europe to align more with Russia and China. The US will lose power in Europe as its bases there are severed. This will also mean less power in the Middle East. If trump continues on this path, he will take over Canada, and that will lead to an insergency throughout the US that will hurt everyone including the billionaires for decades.