And once that rearmament happens, or is underway to an extent that it’s irreversible, what is the US going to do?
They’ll simply resume the same leadership position they always held, but now over a greatly reinforced alliance. And the Europeans will say, thank goodness the US is back. Aren’t we all safer now.
As a practical matter, if things deteriorate to the point that the office of NATO Supreme Allied Commander Europe stops being held by the commander of US European Command - it looks like things might be trending in that direction now that NATO countries are holding meetings without the US and intelligence sharing is starting to break down, never mind whatever the US means when it talks about "withdrawing" from Europe - Humpy Dumpty is broken. Whatever organization the US might join again in the future, or even somehow attempt to "lead," will be fundamentally different than what has gone before.
Trump admin considers giving up NATO command that has been exclusively American since Eisenhower
https://www.nbcnews.com/politics/national-security/trump-adm...
I don't think the author was interested in fully exploring what this news really means.