[LyndsySimon]

> Of all the crazy ways for WWIII to start, a land grab over Greenland would be one of the strangest - at least from today's vantage point. But in just a few years, Greenland could become a flashpoint in world politics.

Greenland and Iceland have been strategically important for US/NATO since at least WW2. Keflavik is and was an essential base for ASW (anti-submarine) patrols in the North Atlantic, a waystation for ferrying aircraft from the Americas to Europe, and a variety of other uses.

Russia establishing a military presence on Greenland would be something akin to their attempt to base ballistic missiles in Cuba in terms of US national security.

If the Danes are amenable to transferring ownership to the US, then I think it would probably make total sense from a national security perspective. It seems to me that it would be a mistake to try to include it as a state, but allowing it to continue functioning as an autonomous possession would make far more sense than even trying to make it a territory (a'la Puerto Rico or the US Virgin Islands), especially given its low population and longstanding cultural ties to Europe. The current annual subsidy from Denmark is "only" about a half billion US Dollars. The US federal budget for FY2018 was $4.094 trillion, so that would be a whopping 0.125% increase.

Thinking about it in those terms, it would make sense for the US to buy it and increase investment into their economy purely as a hedge against potential drastic climate change and to guarantee a base of military operations in the North Atlantic.