Ukrainian forces struck the Syzran oil refinery with long-range drones, producing a large fire, two deaths and multiple injuries according to regional officials. President Zelenskyy publicly credited Ukraine's Unmanned Systems Forces and Special Operations Forces for the operation, which coincided with strikes on additional Russian energy sites and a major drone wave targeting the Moscow region. Russian air defenses reported intercepting over 550 drones during the same period while oil refining in central Russia reached a standstill.