I should add that Russia desires the Baltics, which are in an awkward position to defend by NATO. Finland has a strong military and its proximity to those countries makes an incursion somewhat less likely.
And the lines we now draw between NATO, Russia and China could well be the lines of a WW3 within a decade. Hopefully not though.
Being cut off from nearly all advanced technology and with a terrible economy doesn't sound like a recipe for improving much in that sense either.