From the EU perspective, I can see why it pays to say the US is an unreliable or unnecessary partner. It may or may not be true, but cui bono: EU gets to reindustrialize and invest domestically. Seems like a great idea for EU and US both.
What is your source?
We’re entering a multipolar world. That means more border wars, not less. Everything I’ve seen indicates more demand for American military and intelligence sharing, not less, despite the paradox therein.
I totally take your point around border wars, but I would expect to see substantial efforts to reduce the need for US intelligence, given the caprice shown by the current administration.