There are some of us here who have actually served. And know about defence issues. I've got a quarter century in the CAF. How much time did you do in defence, diplomacy or development? From your tone, I would assume you've got decades in.
I always respect those who serve and have served. Myself? 39 years. All three services, in two nations and ...one or two...operational tours, as you can imagine. Thanks for asking!
the calculation on Greenland is moronic. It's a NATO country that is not far from Europe. It was more than adequately covered during the the Cold War.
The point I make is that securing the Western Hemisphere is the priority - GL is Homeland defence, not defence of a third-party nation overseas. And what if a future administration withdraws from NATO (I think unlikely)? Then even that link is gone. Personally, I think the US will increasingly reduce its multilateral commitments and seek greater numbers of bilats, tailored to specific US requirements and interests.
American hard power is built on a massive network of bases that rely on friendly relationships. All their power projection into the Middle East for the last three decades went through European bases.
True. But the US has drawn down overseas bases before, and if it is no longer the world's policeman, then power projection is not basing 130,000 troops in the Middle East that requires lots of overseas infrastructure. I suspect the US will want to draw down but not leave Europe entirely. (And plenty of eastward power projection via Diego, and from the Pacific).
Europe has two nuclear powers
Off the top of my head, 500 European warheads, to Russia's 5,500. Interesting.
and total numbers of everything from troops to tanks to submarines to fighter jets that is about 60-80% of the US in every category.
On paper, you are absolutely correct. However. How did the Libya intervention in 2011 - a comparatively small operation by any standards - go for the Euro powers? Obama intended to "lead from behind" but unfortunately, it wasn't nearly that easy. Enablers, dear boy, enablers.
As I said, I don't endorse Trump's actions or behaviour, but I think I can discern why.