Military — 2026-09-17
Ukraine Reveals Operation Vivaldi Counter-Offensive Near Lyman Liberating Over 200 Square Kilometers
BLUFKyiv's controlled disclosure of Operation Vivaldi signals durable gains near Lyman, and the 3rd Army Corps will very likely confirm additional territorial advances by late October.
Ukraine's 3rd Army Corps commander Brigadier General Andrii Biletskyi disclosed details on Monday of "Operation Vivaldi," a counter-offensive north of Lyman that has cleared Russian infiltration from roughly 75 square kilometers and retaken another 10 square kilometers of previously held Russian territory, including the settlements of Serednie, Novoselivka, Oleksandrivka and Yarova and the outskirts of Korovii Yar 1. Biletskyi said the operation combined drone strikes, unmanned ground systems and infantry, that unmanned units struck Russian fuel pipelines and storage sites forcing elements of the 144th Motorized Rifle Division's support infrastructure back into Russia's Voronezh region, and that the offensive dealt a heavy blow to the combat capabilities of Russia's 20th and 25th Combined Arms Armies 12. He described the disclosed phase as the first of four planned stages, conducted under strict operational-security silence 1. Newsweek reported that open-source analysts, including Clement Molin and the Institute for the Study of War, assess Ukrainian gains extend further than Biletskyi's official figures, with Molin estimating the entire Lyman salient cleared at over 77 square miles and unconfirmed reports of Ukrainian troops reaching the Zherebets River 12.
AnalysisKyiv's shift from operational silence to controlled disclosure signals confidence the Lyman salient gain is durable enough to publicize without inviting Russian reconstitution, though analytic confidence is low given reliance on a single primary account from Biletskyi without independent front-line verification. Ukrainska Pravda's disclosure anchors the reporting while Kyiv Independent and Newsweek add OSINT commentary rather than confirmation. Kyiv's 3rd Army Corps will
very likely disclose confirmed additional territorial gains in the sector by October 31, following the stated four-phase structure and Biletskyi's pattern of incremental confirmation, while disrupted 144th Motorized Rifle Division logistics into Voronezh Oblast will likely shape Russian resupply timelines through the same window. Kyiv may be inflating a tactical drone-and-infiltration success into a named operation partly to counter Russian claims near Sviatohirsk and bolster morale ahead of winter. Confirmation by October 31 would give Western partners grounds to accelerate deliveries of the unmanned systems and long-range strike assets that enabled the logistics disruption; absent confirmation, planners should treat Vivaldi as a one-time propaganda disclosure rather than a repeatable template.
4 sources
- Operation Vivaldi: Ukraine details drone-led counter-offensive north of Lyman - Defence Matters
- Map Shows Scale of Ukraine's New Battlefield Gains in Major Counteroffensive - Newsweek
- Analysis: Through the fog of war, Ukraine reveals 'Operation Vivaldi' counterattack near Lyman - Kyiv Independent
- 3rd Army Corps Commander Biletskyi confirms Ukrainian offensive near Lyman, promises good news - Ukrainska Pravda
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