If those European economies are such powerhouses, why do they fear an invasion and takeover by their inferior rival, Russia? Russia does not need godless, stupid people within their realm who hate natural resources, modern transportation, farmers and cows. Who needs to rule a Europe of widespread ignorance longing for a return to the Dark Ages?
How smart is it to destroy an undersea natural gas pipeline bringing natural gas YOU desperately need? You are not “getting even” with Russia. You are just acting REALLY STUPID and destroying your own economies.
The classic phrase is “cutting off your nose to spite your face.”
Athens was superior. Yet they ended up getting conquered by Sparta.
Those European economies could buy Russia, sell it for pennies on the dollar, and still be wealthier than Russia is today.