The whole thing relies on the Russian populace believing that they have anything we want on their land and that the west hasn't learned that land invasions of Russia are stupid.
I'm certainly not suggesting that this idea excuses the invasion, the constant interference in the politics of neighbours, etc. It would be far more sensible for Russia to adapt to a new position in the world, like a post-Imperial Britain has been trying to do for the last 70-80 years or so.
There's a chapter on that in Prisoners of Geography (https://en.m.wikipedia.org/wiki/Prisoners_of_Geography)
The whole thing relies on the Russian populace believing that they have anything we want on their land and that the west hasn't learned that land invasions of Russia are stupid.