Ukrainian forces have advanced in the Lyman sector of Donetsk Oblast through Operation Vivaldi, recapturing territory north of the city and crossing the Zherebets River at multiple points. These gains place pressure on Russian positions around Terny, a village previously captured by Russian troops in early 2025. Ukrainian units from the 3rd Army Corps have liberated nearby settlements and disrupted Russian supply lines east of the river, while Russian forces face logistical strain and counterattacks. Broader Russian long-range strikes on Ukrainian energy and infrastructure have not altered the local ground dynamics. Upcoming developments hinge on whether Ukrainian momentum sustains through fall maneuvers or if Russian reinforcements stabilize the line before any potential re-entry into Terny.