Another salient summary from the Durant: The west is pushing the narrative the Russia has scaled back (or some may even call it a defeat) their war goal to securing Donbass. However it is likely this was Russian goal from the start, their encirclement of major Ukrainian cities is simply to pin down Ukrainian troops to prevent them from reinforcing the encircled Ukrainian forces in the east which Russia intends to destroy.
This seems perfectly reasonable to me, I've said it before it would be insane to try to take the entire Ukraine. Russia simply does not have the manpower to do so, not to mention the quagmire of resistance it would become.