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Friday, Sep 18, 2026

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Ukraine Stops Russian Encirclement and Clears 85 Square Kilometers in First Phase of Operation Vivaldi↩︎
topics ⚔️ War tags PoliticsWarWorldUkraine keywords Third Army CorpsAndrii Biletskyi20th25thArmiesBiletskyi

The Third Army Corps liberated the village of Serednie and eliminated roughly 1,500 Russian troops during a counteroffensive in the Lyman area of northern Donetsk. Brigadier General Andrii Biletskyi confirmed the operation destroyed more than 12,000 Russian drones and cleared 75 square kilometers of territory while de-occupying another 10 square kilometers. The offensive focused on the 20th and 25th Russian Armies to dismantle a "northern pincer" used by the adversary.

Strikes on logistics, rear bases, and communication hubs forced Russian forces to shut down a tactical fuel pipeline and relocate storage facilities to the Voronezh region. The offensive, designated Operation Vivaldi, was conducted under strict operational secrecy and is currently in its first "season." Biletskyi stated that these maneuvers prevented the encirclement of the Sloviansk-Kramatorsk agglomeration.

Image via @thestudyofwar on X
Continues from Thursday, Sep 17
Ukraine Operation Vivaldi Blocks Russian Encirclement and Restores Tactical Maneuver
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