Lyman

Lyman is a city of roughly 20,000 people in the northern Donetsk Oblast of Ukraine, sitting on the Siverskyi Donets river approximately 140 kilometres northwest of Donetsk city. Russia briefly occupied Lyman during the 2022 offensive before Ukrainian forces liberated it in a rapid counteroffensive push in October 2022. It has remained under Ukrainian control since. In April 2026, Lyman became the symbolic focus of a disinformation dispute: Russian Chief of the General Staff Valery Gerasimov claimed on 21 April that Russia had "fully completed" the occupation of Luhansk Oblast — a claim that specifically required ignoring Lyman, which sits just inside the Donetsk-Luhansk boundary zone and which ISW confirms Russia does not control.

The city's rail junction makes it strategically significant: Lyman connects the Donetsk and Luhansk supply corridors. Its liberation in 2022 was one of the most operationally significant Ukrainian gains of that counteroffensive, forcing Russian forces to abandon a large salient. The city suffered substantial damage during occupation and fighting. Russian information operations have repeatedly misrepresented its status; this is the fourth time Gerasimov has claimed full Luhansk control despite ISW verification showing Ukrainian territorial presence.

ISW's April 2026 assessment puts Russia's actual 2026 gains at roughly 340 square kilometres — one fifth of Gerasimov's claimed 1,700 km2 — with a net Russian territorial loss since 1 March. Lyman's continued Ukrainian control is a data point that exposes the scale of the misrepresentation.