I think there's quite a lot the west can do, without firing a shot.
The question is the extent to which it's prepared to subject itself to economic pain.
Will Volkswagen be prepared to shut down it's plant in Kaluga?
Would the UK Government be prepared to confiscate private properties in London and freeze all Russian financial assets?
How about expropriating Abrahmovich's ownership of Chelsea - seizing his yacht?
How about stealing every single piece of Russian owned property, assets and roubles in our respective countries?
And on top of that - entirely locking them out of the Western Financial System?
As I said earlier - I'd be prepared to pay higher taxes and prices.