Ukraine’s Operation Vivaldi counteroffensive north and northeast of Lyman has reversed earlier Russian gains, reclaiming roughly 277 square kilometers and 16 settlements through late October 2026. Ukrainian forces cut off a Russian salient, halted attempts to envelop the Sloviansk-Kramatorsk area from the north, and forced Russian units to divert resources, resulting in an operational setback for Moscow’s broader Donetsk campaign. Russian forces continue localized assaults toward Lyman and nearby villages but have recorded minimal net progress amid high casualties and Ukrainian defensive actions supported by drones and small-unit tactics. As of early November, the front remains active with ongoing Russian probes but no confirmed advance into Lyman proper. The situation hinges on whether Russian command can reconstitute depleted units before further Ukrainian pressure alters the local balance.