Ukrainian forces regained control of most of Kupiansk through counterattacks launched in late 2025 that encircled and cleared Russian infiltrators after Moscow's premature November 2025 claims of full capture. As of September 2026, Ukraine maintains administrative and military control over the city proper, with Russian presence limited to small, non-consolidated infiltration groups. Ukrainian units, including the 2nd Khartiia Corps, have since cleared additional territory north of Kupiansk toward Dvorichna, shrinking Russian bridgeheads across the Oskil River and interdicting logistics. Russian Western Group operations continue without producing consolidated gains inside municipal boundaries, per Institute for the Study of War assessments. These battlefield realities align with trader consensus assigning low probability to full Russian capture by near-term resolution dates.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedFierce fighting continues near Kupiansk with expanding control zones
December 31 rises to 21%2%
Reports indicated ongoing heavy fighting near Kupiansk with expanding control zones but no decisive Russian capture. The continued contested status of the area contributed to low market confidence in Russian capture by the resolution dates.
ISW reports continued Russian infiltration missions in Kupiansk area
June 30 rises to 3%1%
Geolocated footage showed ongoing Russian infiltration missions in northern and central Kupiansk, with Ukrainian forces striking Russian positions. ISW assessments indicated contested control rather than full Russian capture, sustaining low market confidence in a full capture by June 30.




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