> Nothing is stopping the US from deploying those in Greenland
That would require the (politically unlikely) agreement of the Danish government. See article 2 of the relevant treaty [1]:
"...establishing and/or operating such defense areas as the two Governments, on the basis of NATO defense plans, may from time to time agree to be necessary..."
> The only reason Trump wants Greenland is he's not all there -- Greenland looks big on the map so he's fixated on it.
I agree that that is part of it, but there is more to it than that.
That would require the (politically unlikely) agreement of the Danish government. See article 2 of the relevant treaty [1]:
"...establishing and/or operating such defense areas as the two Governments, on the basis of NATO defense plans, may from time to time agree to be necessary..."
> The only reason Trump wants Greenland is he's not all there -- Greenland looks big on the map so he's fixated on it.
I agree that that is part of it, but there is more to it than that.
[1] https://avalon.law.yale.edu/20th_century/den001.asp