The General Staff of the Armed Forces of Ukraine has released a battle update confirming a massive, multi-regional offensive on Russia executed early Sunday morning, May 31, 2026. The coordinated operation simultaneously crippled critical elements of Russia’s domestic energy architecture and systematically dismantled frontline command structures, electronic warfare hubs, and drone manufacturing assets.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. Crushing the Kremlin’s fuel supply lines Ukrainian military planners delivered their most logistically significant blow against the Saratov Oil Refinery, located in the Volga River region. Operating as a core subsidiary of state-owned energy giant Rosneft, the facility maintains a designated processing capacity of approximately 7 million tons of crude oil per year and serves as a primary fuel supplier for the Russian military’s occupational logistics. The General Staff confirmed that the strike ignited a massive, multi-point structural fire across the refinery’s territory. While independent OSINT tracking and local footage previously indicated that a drone struck the plant’s vital isomerization unit, Ukrainian military officials noted that the full scale of the structural damage is still being evaluated. Defense units successfully struck the Lazarevo linear production and dispatch station in Russia’s remote Kirov region. The facility is a crucial logistical node responsible for pumping crude oil through the massive Surgut-Gorky-Polotsk trunk pipeline.