Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline To play this video you need to enable JavaScript in your browser. Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline Close Deep inside an underground bunker in eastern Ukraine, commanders monitor the battlefield through a live video feed as a Ukrainian drone intercepts a Russian surveillance drone. The footage shows the Ukrainian drone hovering above its target, before dropping a net and dragging it from the sky. The interception is part of Operation Vivaldi, a Ukrainian counter-offensive that Kyiv says has recaptured 277 sq km (106 square miles) of territory in the eastern Donbas region in recent months. But Ukraine says new restrictions on Starshield, the military version of Elon Musk's Starlink satellite network, are threatening its drone operations.

To play this video you need to enable JavaScript in your browser. Figure caption, Watch: BBC follows Ukraine's Operation Vivaldi pushing Russia back on frontline Cigarette in one hand, radio in the other, one of them calls in their own drone to bring it down and warns the soldiers below of the threat. The men are dangerously exposed, on the long walk across open ground from their front line positions. They are being replaced after three months forcing the Russians back. This is part of Operation Vivaldi, a Ukrainian counter-offensive which they say has liberated 277 sq km (106 square miles) in the eastern Donbas region in recent months.