Ukrainian forces have conducted a successful counteroffensive known as Operation Vivaldi north of Lyman, pushing Russian units back across the Chornyi Zherebets River and disrupting attempts to encircle the Fortress Belt toward Sloviansk and Kramatorsk. Russian forces continue small-scale infantry assaults and limited infiltrations in the Lyman sector but have failed to consolidate gains or advance meaningfully, according to geolocated assessments. Overall Russian territorial gains have slowed sharply in 2026, with exaggerated official claims contrasting independent evaluations of minimal net progress. These battlefield dynamics, including Ukrainian drone strikes on Russian positions and restored defensive maneuver, underpin trader consensus assigning a modest probability to full Russian capture of Lyman by year-end.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedISW map confirms Ukrainian control over Lyman railroad station area
December 31 dips to 7%3%
By late September, ISW assessments showed Ukrainian forces holding the Lyman railroad station area with no red shading indicating Russian control, confirming that Russia had not captured the station by the market's resolution date.
Ukrainian forces maintain control over Lyman railroad station area, Russian capture unlikely
December 31 drops to 8%6%
By late September 2026, Ukrainian forces had made significant advances north and around Lyman, pushing Russian forces back and maintaining control over key areas including the railroad station, as confirmed by ISW and multiple sources, leading to a sharp decline in market belief of Russian capture by December 31, 2025.




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