[echelon]

The DoD, which outlives any presidential term, is preparing for multipolarity. It wants to maintain power over the Western hemisphere while continuing to mind after its interests in Asia and Europe as best as it can. If America can maintain hegemony in the whole of the Western hemisphere, it's largely shielded from whatever happens in Asia, especially if future administrations continue to double down on isolationism.

Venezuela and even the posturing on Greenland are the DoD war gaming out a firewall from Chinese and Russian influence. They want to stop South American trade with our rivals, and especially prevent basing of foreign troops.

Greenland becomes a strategic part of this once global warming opens the North Sea to large volumes of shipping. It will become the major shipping corridor, and America wants complete control over it.

Not to mention all of the oil and gas exploration both of these countries provide.

Trump isn't thinking 30 years ahead. This is the DoD through and through. They think in terms of decades and centuries.