Ukraine Says Operation Vivaldi Pushed Russian Forces Back in Donbas

What changed

Ukraine says its four-stage Operation Vivaldi pushed Russian forces back and recaptured 277 sq km in the eastern Donbas near Lyman. The operation also exposed how dependent the battlefield has become on Starshield, the military version of Starlink: Ukraine says restrictions were imposed without warning as the offensive concluded.

Kyiv says Russian forces suffered 8,000 casualties during Vivaldi and nearly 50,000 along the front in September, while Ukrainian losses were far lower. Those figures, like the territorial claim, have not been independently verified here, and Russia has not publicly acknowledged the reported advances.

Why it matters

The striking part is not simply that Ukraine gained ground. It is how the gains were made. Commanders watched live drone video in bunkers, used one drone to trap another with a net, and relied on unmanned vehicles to deliver supplies, evacuate wounded soldiers and attack positions. Digital connectivity linked all of it.

That makes Starshield more than a communications convenience. It helps Ukrainian forces see, move, fly and coordinate across the battlefield, including with interceptor and mid-range strike drones. If access can be restricted without warning, a tool woven into battlefield operations becomes a point of vulnerability at the same time it is providing an advantage.

The immediate military picture remains unsettled. Russian drones are still active, with one Ukrainian unit saying it faces about 10 on an average day, and Russia continues striking Ukraine from the air. But at ground level, the reported Ukrainian advance has blunted a Russian attempt to encircle the Fortress Belt cities still under Ukrainian control. The next question is whether those gains hold while the forces and communications systems that enabled them remain under pressure.