Guardian on Kreminna

https://www.theguardian.com/world/2022/dec/27/ukraine-says-its-forces-are-close-to-recapturing-key-eastern-city-of-kreminna

Radio Free Europe on Kreminna

https://www.rferl.org/a/ukraine-kreminna-battle-recapture-russia-supply-lines/32197165.html

Russians are desperately moving around their troops in Luhansk to stop the advance. Which means the Ukrainian advance is already at a serious pace and strong enough to pull troops towards them.

I expect the side effect of this to show up in the Russian offensive lines near Bakhmut. When you are scrambling to defend. You aint punching forward.