So as I see it, the Ukrainian forces in the Kharkov counter offensives have not yet fought a major battle and the gains of the last few days were achieved through Russian forces withdrawing rather than winning an offensive action and actively conquering them.
I also understand that the Russian forces have made no further withdraw today and that any "advances" made by Ukrainian forces today were only in relation to places that the Russians left over the last couple of days.
So all in all, this satisfies the clear definition of a Russian tactical retreat. Whether you think such a retreat was valid or necessary is another matter.
I also note that over the last few days, where the Russians have been dug in and resisted, such as at Lyman, the Ukrainian assaults were repeatedly defeated and repelled.
Regarding the strikes against the Ukrainian Power grid this evening. While power may have been restored to a degree across the Ukrainian power grid, very clearly a large percentage of the countries generating capacity has been destroyed today and this will not be restored any time soon. Whether or not the remaining capacity is sufficient to provide for the Ukraine's needs, we shall find out soon enough. It as also a fair assumption that other generator plants will be targeted over the course of the next few days.
