Ukraine launched more than 1,000 drones toward Russia overnight on September 20 as Russia concluded its first parliamentary election since the full-scale invasion began in 2022. The Moscow Refinery, owned by Gazprom Neft and capable of processing about 12 million tonnes of crude annually, or roughly 245,000 barrels per day, was damaged and caught fire. Ukraine’s General Staff said the AVT-6 primary crude-distillation unit and an integrated crude-processing unit were hit. Russia’s Defense Ministry said 1,110 drones were destroyed across 19 regions, Crimea and the Black Sea, while Moscow Mayor Sergei Sobyanin said 450 were intercepted near the capital and that more than 1,600 had been shot down since September 19. A separate report said 152 targeted the Moscow direction. Two people were killed and 20 injured in the wider Moscow region. Outages at the Yaroslavl, Syzran and Saratov refineries further reduced Russian diesel supplies as Middle East disruptions pushed global diesel futures and refining margins to records; U.S. retail diesel reached a record $6.45 per gallon and the heating-oil crack spread rose to $117 per barrel. The attack also intensified U.S. debate over a possible diesel-export ban, despite warnings that restrictions could reduce refinery activity and worsen fuel shortages. Russia’s disputed three-day election included occupied Ukrainian territories and was expected to preserve United Russia’s control of the 450-seat State Duma.