Ukraine’s military said it carried out an overnight drone strike on the Saratov oil refinery in southwestern Russia early on 10 August, igniting multiple fires that were still burning hours later. Satellite data from NASA’s FIRMS monitoring system showed a significant heat signature at the site shortly after local residents reported explosions. The refinery, which has a design processing capacity of about 140,000 barrels of crude a day, is one of several Russian energy facilities targeted by Kyiv in recent weeks. Ukraine’s General Staff said the attack caused “explosions and a fire” at the complex, located roughly 600 kilometres from the front line. Saratov regional governor Roman Busargin confirmed damage at an industrial facility and said one person was killed. Russia’s Defence Ministry claimed air-defence units shot down or intercepted eight Ukrainian drones over the region, but acknowledged that debris fell on the refinery. Russia’s federal air-transport agency imposed temporary flight restrictions at Saratov airport following the strike. The attack underscores Kyiv’s strategy of disrupting Russia’s fuel supply chain and striking deep inside the country’s territory. Previous drone raids this month have also targeted nearby Engels, home to a major bomber base, as Ukraine seeks to degrade Moscow’s war-fighting logistics.