Russian forces have maintained pressure on Kostiantynivka in Donetsk Oblast through repeated assaults, with Ukraine’s General Staff reporting 15–24 daily attacks repelled in the sector during early-to-mid October 2026, alongside heavy use of drones, artillery, and guided bombs. Russia announced full capture in July 2026, but Ukrainian officials and the Institute for the Study of War assessed the city as contested, with Ukrainian units continuing operations and resupply missions into October. Recent ISW assessments note incremental Russian gains in the broader Donetsk offensive axis but no consolidation of complete control, amid Ukrainian defensive repositioning and electronic warfare countermeasures. Ongoing frontline engagements and the absence of verified full territorial consolidation continue to shape assessments of capture timelines.