M0nica
There is no way about it, in the future, in fact as from now, Europe can only look to Europe for its defence.
We need to boot the US out of NATO, (push it before it jumps), change the name to the ETO (European Treaty Organisation) open it to all countries in Europe whether they are members of the EU or not. This would include other countries threatened by the Russia/US axis, Moldavia, Serbia, Turkey, Ukraine, all of us beef up our defence spending so that we turn the new ETO into a credible defence unit.
We need to end all dependence on the US for defence materials. Develop our own fighter planes, tanks, drones and guns.
Our big enemy now is Trump not Putin and we must play him at his own game.
The UK already develops its own aircraft, at the moment focusing on a sixth generation combat aircraft, as part of a GLOBAL initiative with Japan and Italy. As discussed at a meeting outlining the future of our RAF. We do not need to be tied down to the demands of a protectionist EU.