The problem for Europe now is that it's been effectively cut off from Russian resources. Now that Russia has managed to reorient their trade towards the east, I doubt they'll want to deal with Europe going forward. Why bother trying to do trade with people who hate you and are constantly trying to undermine you when you can work with friendly partners instead. Any trade with Europe will be seen as being a very risky proposition by Russia unless there's a dramatic political shift in Europe going forward.

European leaders should've realized that it was in their interest to do everything possible to prevent the war from starting in the first place. Yet, they chose to follow Pied Piper right off the cliff instead.