Ukraine Surprise Robot Offensive Reverses Russian Gains in Donbas
A surprise Ukrainian robot offensive in the eastern Donbas region appears to have reversed over a year of Russian territorial gains, according to security experts cited by CNBC, dealing a strategic blow to Russian President Vladimir Putin’s territorial ambitions.
Operation Vivaldi Liberates Territory Around Lyman
Details of the counteroffensive, dubbed “Operation Vivaldi,” have come to light following its launch in May. According to security experts speaking to CNBC, Ukraine’s Third Army Corps successfully deployed large bomber drones and remote-controlled robots behind enemy lines around Lyman in the northern Donetsk Oblast. The operation caught Russian forces off guard, as Moscow’s troops had been seeking to encircle Ukraine’s remaining fortress belt cities in the region for the past 12 months.
Ukrainian Brigadier-General Andrii Biletskyi reported on Sept. 28 that the third phase of Operation Vivaldi liberated an additional 51 square kilometers. This brought the total area retaken by Ukrainian forces to 176 square kilometers. The fighting inflicted over 2,000 Russian losses and resulted in more than 250 Russian soldiers being taken prisoner, Biletskyi added.
Strategic Execution Denies Russian Drone Control
Patrick Bolder, a defense expert and strategic advisor at the Hague Center for Strategic Studies, described the offensive to CNBC as a “big bloody nose” to Putin’s minimal war aim of seizing the Donbas. Bolder noted that Ukrainian forces maintained operational secrecy, executed disinformation campaigns, and disrupted logistical supplies through a months-long air operation. By securing control of the air in the Lyman area, Ukrainian forces denied Russia the use of its drones before deploying unmanned ground vehicles to attack Russian troops from behind.
Serhii Kuzan, chairman of the Ukrainian Security and Cooperation Center, stated that the experience of Operation Vivaldi demonstrates how the systematic replacement of human personnel with robots is changing the paradigm of modern warfare.
Moscow Steps Up Infrastructure Attacks
While security experts emphasize that the robot offensive is not a decisive breakthrough, David Kirichenko, an associate research fellow at the Henry Jackson Society, told CNBC that the operation sends a powerful message to Moscow and Kyiv’s partners that the Ukrainian military remains capable of defeating Russia on the battlefield.

Meanwhile, as Russia faces setbacks on the front lines, the Kremlin has stepped up attacks on Ukraine’s capital and major cities, targeting data centers, communications, and energy infrastructure to disrupt information flows and force power cuts ahead of winter. In response, Ukraine has targeted Russian oil refineries and logistics hubs to raise the cost of the more than four-and-a-half-year war.
Security experts note that Ukraine’s territorial gains reverse a period of Russian advances that had persisted for more than twelve months prior to the launch of Operation Vivaldi in May.