The more I read, watch, and listen, the more I become convinced that this has absolutely nothing to do with Russia wanting a Soviet or Tsarist Empire (which would be genuinely insane) and everything to do with annexing enough of those countries on its border (ones with high Russian populations) so that NATO membership becomes impossible. What the video above describes in relation to Georgia and so on.
Is that a legitimate premise? No. But is it a pragmatic understanding of what otherwise seems completely irrational? Probably. I'd imagine that's how the US actually view this (echoing Obama and the rest before and after him) rather than the more emotional rhetoric you see now in the heat of the moment/fog of war. Basically, there is no justification for an invasion but there is, in the cold/calculated view of the world as a dominance hierarchy, a frame within which to understand it without in any sense legitimizing it or necessarily even equivocating
I think that's more for Western consumption than internal Chinese viewers. It's still just a couple of tweets, though, the realpolitik will be in the economic means of assistance (or exploitation) which China is or is not willing to grant Russia.
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