This DT article is intresting to say the least:

Russia's northern front line in Ukraine appears to have collapsed, with military chiefs in Kyiv saying the army has recaptured at least 3,000sq km.

The biggest advances have been to the south east of Kharkiv, with Ukrainian soldiers raising their flags above towns along an important transport route used by Russian forces to supply units in Donbas.

"Since the beginning of September around 2,000sq km have been liberated," Volodymyr Zelensky said in his evening update on Saturday.

"These last few days the Russian army has shown us its best side, its back. It's a good choice for them to flee."

By Sunday morning Valerii Zaluzhnyi, the commander-in-chief of the armed forces, said the area stood at about 3,000sq km, roughly the size of Lancashire.

"In the Kharkiv direction, we began to advance not only to the south and east, but also to the north. There are 50km to go to the state border [with Russia]," General Zaluzhnyi said.