it kind of did. Europe saved roughly 1% gdp for 30 years at the cost of 1 invasion that will almost certainly cost less that 30% of a year's gdp to repel.

It took almost two decades of continued effort of toe-stepping and pinching various pain points to get where we are now, so quite well enough actually.

Even now all parties are restrained and make deals: Ukraine still pumps Russian gas to Europe, receiving payments from Russia.