Ukrainian strike sets Russia’s major oil refinery on fire

On 2026-05-22, Ukraine's General Staff said a strike sparked a fire at the Lukoil-Nizhegorodnefteorgsintez refinery in Kstovo, Nizhny Novgorod region. The article said damage assessments were still underway, and no fatalities were reported. The same report also mentioned a separate pumping station strike in Yaroslavl region, but the refinery fire is the best single event fit for this cluster.