Ukrainian counteroffensives under Operation Vivaldi have reversed Russian territorial gains across northern Donetsk Oblast in September and October 2026, liberating over 170 square kilometers and forcing Russian units into defensive postures near the Lyman and Kramatorsk axes. Viroliubivka, located north of Kostyantynivka, remains under Ukrainian control according to independent assessments, despite earlier unconfirmed Russian claims of advances in the sector. Russian forces continue incremental pressure through ground assaults and infiltration attempts amid contested frontline positions, while Ukrainian reinforcements and artillery strikes have blunted momentum toward the fortress belt cities. Trader consensus on capture by late 2026 reflects these stalled advances, Ukrainian defensive resilience, and the broader slowdown in Russian offensive operations across the Donbas. Further developments hinge on force reallocations, winter conditions, and any shifts in Russian prioritization of the Kramatorsk direction.