I think there is myopic thinking here, on the part of the West, and I'd really truly like to understand it. Why do you think that NATO has the upper hand in the European theatre at the moment? From the perspective of someone on the ground, it sure seems like Russia is getting what it wants.
It looks to me like an expensive reactionary measure provoked by the US' idiotic interference in Ukrainian politics...
What am I missing? Is there some reason Russia desperately wanted Crimea, or turmoil and devastation in Ukraine?
Russia had many incentives to want Crimea. Certainly the West is making Russia pay for Crimea. But the Putin administrations actions radically stunned the NATO allied powers. Cat in a Tiger game.
I don't think it will continue this way, as contigency and response planning is by now surely narrowed down - maybe we'll get to see it if Mariupol is captured. In the long term under the faltering of the Eurasian Union Russia risks becoming a satellite state to China - so it will be interesting to see how the dynamics play out (for the sake of EU/US, we might hope that the 'balance of powers' is a century dead.)