Here's my theory about Trump's focus on Greenland

[OC375]

4. Berlin Conference

Putin gets Europe
Trump gets Greenland down to South America
China gets Asia
Sort out the M.E. later and kick the can on fighting each other.
"Everyone" is happy, as far as they're concerned, and no reason for anyone to mess with the other for a hundred years.
As people have know for years, you can get a lot if you just walk in like you own the place, do what you want, and walk out like it's just another Tuesday with your head held high. Most people won't do a thing.