The European Union is getting good at adapting to unprecedented circumstances. Over the last five years, the 27 member countries have pulled together to fund the purchase of tens of millions of vaccines and devised a massive recovery fund to resuscitate economies ravaged by the pandemic.
I recently attended a talk by Admiral James Stavridis, who among other thing was the 16th NATO Supreme Allied Commander. He feels the EU will be able to defend itself if the US abandons NATO, etc. Between the manpower the European members has to draw on, their existing defense & manufacturing industries, their shared mistrust of Putin, etc. they have a lot going for them.