Please. Russia had an economy of the size of Italy.

And I said "had", because this was before Ukraine destroyed most of their oil plants, and refineries, and their navy, and their petrol fleet, and the online stores, and before they killed a big chunk of their male workforce. And before they have an increasing debt with China and NK that they will need to repay somehow.

At this point everybody knows that the Russian economy will not survive after the war is over and that the country most probably will split.

Europe can deal with a ruined post-Ukraine war Russia.

They would just stand some suffering, but for sure 500 millions of motivated people can build more and faster than 100 millions of a Russia tied by deliberate anti-efficiency rules build to please oligarchs. The only question is how much damage could Russia do, before Moscow and St Petersburg are reduced to ashes as retaliation if they dare to try the final solution.

The hybrid war is the real problem. Russia can sponsor still many street "Syrian" terrorist attacks in Sweden, or cause a train wreck here and there, or burn Malibu for basically peanuts. They can do this for years and years.