the three dimensional chess board in Greenland

 Hannibal is often portrayed as the greatest general in history. But do you know how he was defeated? 

By going behind him to destroy his supplies and reinforcement, so for 15 years all he could do is terrorize the locals in Italy wandering around stealing their food etc.

And he was finally stopped when Scipio Africanus invaded North Africa.  . And no, those terrible elephants which was their superweapon, didn''t work. (or maybe not).

so why am I pointing this out?

Because China is weaponizing against a weak Europe (and Canada) in many ways: 

and Trumpieboy is hitting them at their periphery so they can't exploit Latin America (stopping China from taking over Venezuelan oil and rare earth metals, and giving a headsup to other countries where there is already resentment against Chinese tactics of lending them aid and then taking over the projects when the loans are not repaid: i.e. exploitation worse than the Yankees, sort of like better the devil you know than the devil you don't know).

and now by publicizing the importance of Greenland, Trump is giving a headsup about China trying to use their economic stranglehold by usual means to take over that land's wealth (build stuff by importing their own workforce, and then take over the ports/resources when the country can't pay them back).

This is the geostrategy behind Trumpiboy's moves.

I may not like it, but we see how weakness shown by PNoy and Obama allowed China to take over the West Philippine sea, build and weaponize shoals into artificial islands which have the ability to block shipping and the internet that goes through this area.

Someone said Trump plays three dimensional chess, a term that refers to the game popularized by StarTrek and as Wikipedia notes it that term is now used to describe geopolitical moves:

The expression "three-dimensional chess" is sometimes used as a colloquial metaphor to describe complex, dynamic systems with many competing entities and interests, including politics, diplomacy and warfare. To describe an individual as "playing three-dimensional chess" implies a higher-order understanding and mastery of the system beyond the comprehension of their peers or ordinary observers, who are implied to be playing "regular chess"

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