https://southfront.org/battle-for-kharkov-region/

As I have pointed out from the beginning of the conflict, the Kremlin's presumption that Russia's military intervention could be limited to driving the Ukrainian forces out of the Donbass region was a strategic blunder, especially the go-slow feature as it gave the West plenty of time to widen the war. A much wider war has now occurred if Southfront's report is correct that one-third of the forces used in Ukraine's "counteroffensive" in the Kharkov region were supplied by NATO member states.

According to Southfront's report, thinly spread Russian forces, aware that an attack was coming, withdrew to a consolidated position and suffered few losses. The Ukrainian/NATO force suffered heavy losses. With Russian reinforcements now approaching the scene, the Ukrainian/NATO force will likely be destroyed as was the fate of the Ukrainian "counteroffensive" in the south.