Ukraine’s Operation Vivaldi counteroffensive, launched in May 2026 north of Lyman, has reclaimed 150–240 square kilometers and driven Russian forces back across the Chornyi Zherebets River, blunting Moscow’s northern approach toward Sloviansk and Kramatorsk. Russian claims of near-capture in June were contradicted by geolocated assessments showing minimal presence inside the city and sharply reduced territorial gains overall. Ukrainian forces continue local advances and counterattacks, while Russian units remain on the defensive amid slower offensive momentum and redirected resources. These battlefield shifts have lowered trader expectations for Russian control of Lyman by year-end deadlines, with markets reflecting the impact of sustained Ukrainian pressure and the absence of decisive Russian breakthroughs in the sector.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedUkrainian forces liberate Serednie near Lyman, repelling Russian counterattacks
December 31 drops to 9%5%
Ukrainian troops entered and secured Serednie northwest of Lyman, repelling Russian attempts to recapture it, further consolidating Ukrainian control and diminishing Russian prospects of capturing the Lyman railroad station.
Ukrainian forces clear Russian infiltrators from Lyman and surrounding areas
December 31 dips to 9%3%
Ukrainian forces pushed Russian elements from southeastern Lyman and nearby villages, contested other areas, and cleared infiltrators from multiple settlements north and northwest of Lyman. Russian forces retained limited control in some areas but failed to capture the Lyman railroad station. This confirmed Ukrainian control led to market prices dropping to historic lows for Russian capture probabilities.




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