Spending among NATO member nations had already started growing considerably since Trump's first term. And a lot of that spending went towards buying US made weapons, though not exclusively.

With this move, any nation will think twice about buying US made weapons. Trump effectively kneecapped the US arms industry by this move.

The spending that happens, though, will not be flowing to the US like a very large share has in the past.

Europe has spent trillions on defence since the fall of the Berlin Wall, most of which went to US weapons manufacturers.

What the last decade has shows is relying on external oligarchs for energy and defence is not sensible. The us has encouraged this for a long time. I just hope that Europe actually steps up quickly enough.

It will hurt the us a lot more than Europe, and China will be massively emboldened in the Pacific. It’s a new world order.

Even accepting that as true (it’s not — it’s the cost of having soft-power in Europe.) it means that no European, and probably Turkish, Korean, Japanese and Canadian cash will be flowing to the USA defence industry.

They can't rely on weapons that they have bought from US defense manufacturers