What Kharkiv's collapse meant for Russia's war

What did it mean when a Russian occupation that had stood since February began to unravel within days? On 12 September 2022, the answer was visible on several fronts at once: on the map, in Russian domestic politics and in the strikes on Ukrainian infrastructure.

A fast-moving front

The offensive in Kharkiv Oblast had begun on 6 September 2022, as a second counteroffensive alongside the one announced in the south in late August. Russian forces had held parts of the oblast since 24 February 2022, including Izium, Kupiansk and Balakliia.

By 10 September, Ukrainian troops had retaken all three cities. The Russian Defence Ministry confirmed the withdrawal of troops from several towns in the oblast, describing it as a move to let forces regroup and reinforce the Donbas. On 11 September, Russian forces withdrew from most of the oblast, and Ukrainian soldiers retook Chkalovske and Velykyi Burluk. The governor of Belgorod Oblast, Vyacheslav Gladkov, said thousands of civilians were fleeing across the border into his region.

On 12 September, Ukrainian forces said they had seized 20 more settlements in the previous 24 hours, including Dvorichna, and claimed to have captured many Russian prisoners of war. The Ukrainian general staff reported that Russian troops had abandoned Svatove in Luhansk Oblast as Ukrainian forces advanced. The movement was no longer confined to Kharkiv Oblast.

Russia's answer from the air

On 11 September, Russia launched Kalibr cruise missile strikes on critical infrastructure, including Kharkiv TEC-5. The strikes caused a total blackout and water shutdown in north-eastern Ukraine and in Kharkiv and Donetsk oblasts. Ukrainian officials confirmed that at least 40 electrical substations had been destroyed.

The pairing is worth noting. As Russian ground forces gave up territory, strikes on power and water supplies hit civilians well beyond the front line.

Voices inside Russia

The reverberations reached Russian politics. On 12 September, more than 30 municipal deputies from Russian cities signed a petition calling for President Vladimir Putin to resign, citing the substantial Ukrainian advances. The number was small, but the petition was a public challenge to the leadership at a moment when its military account of events, a regrouping to reinforce the Donbas, was being tested by the speed of the retreat.

The same day, multiple explosions were reported near Taganrog in Rostov Oblast, inside Russia.

Why the day matters

Taken together, the reports from 12 September 2022 describe a shift in momentum. Territory that Russian forces had held for more than six months was changing hands within days, civilians were crossing into Belgorod Oblast, and Russian officials at the municipal level were openly demanding a change at the top. Later reporting would describe the occupation of Kharkiv Oblast as shrinking until, from November 2022, Russia held only a small portion of the oblast.

For international readers, the lesson of that day is about speed. The offensive's early gains, the loss of Izium, Kupiansk and Balakliia, the move toward Svatove and the strikes on Ukrainian infrastructure all fell within a single week. Which of these threads would prove decisive was not yet settled on 12 September 2022, but each had already altered the picture of the war.