
Zelensky Announces Fourth Phase of Operation Vivaldi After Reclaiming 176 Sq Km in Donetsk
President Volodymyr Zelensky announced on September 30, 2026, that Ukraine is launching the fourth phase of Operation Vivaldi, a counteroffensive in the Lyman area of Donetsk. The operation has retaken 176 square kilometers of territory, inflicted over 5,000 Russian casualties, and captured 250 soldiers. Zelensky emphasized the critical role of ground robotic systems in reducing human casualties and disrupting Russian logistics. The offensive has halted Russian advances toward the Sloviansk-Kramatorsk fortress belt, reversing over a year of Russian gains in the region.













