While data on the proportion of each state's defence capability made up of imported weaponry is difficult (impossible) to find, what we do have is data on exports;

This reveals that two thirds of all military imports used by European states come from America.

If Military Keynsianism (implied or explicit) is about ramping up domestic capacity, pivoting away from US-made weapons systems looks like being a major priority.

In the short(ish) term that may be pretty difficult

#security
h/t FT