According to the BBC, the messaging from the Ukrainian government has taken a turn towards being more pessimistic (and perhaps more realistic

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https://www.bbc.co.uk/news/live/wor...906edcb622de4ef912291c&pinned_post_type=share
The BBC are saying that after they have finished in Donbas, then the Russians will switch to Kharkiv. IIRC a couple of months ago I linked to a CNN video where a retired US general said it was inevitable that Russia would seize, and hold, everything East of the Dnieper river. At the time I thought he was being ridiculously pessimistic, now I'm not so sure.
For all the talk of Russia taking heavy casualties, having low morale and having to resort to using ancient equipment, they seem to be advancing inexorably. Maybe their losses are being vastly overestimated, maybe their reserves run far, far deeper than first assumed, maybe they're much better at regrouping and re-equipping units or a combination of all three, but they seem to be getting more, not less, effective.