Ukrainian drones struck Rosneft's Kuibyshev refinery in Samara overnight on 22 September, hitting two primary crude-processing units and triggering a large fire, Ukrainian drone and missile maker Fire Point confirmed. The strike is part of Ukraine's ongoing campaign against the fuel infrastructure that sustains Russia's war—the same plant had to halt crude processing after a drone attack in June. The attack came one day after US President Donald Trump for the second time in a week urged Ukraine's leader, Volodymyr Zelenskyy, to stop the refinery campaign.

FP-1 drones hit both primary processing units

Fire Point said its FP-1 drones struck the Kuibyshev refinery, hitting the AVT-4 and AVT-5 atmospheric-vacuum distillation units—the plant's primary crude-processing installations. A large fire broke out on the refinery grounds. The Kuibyshev refinery is part of Rosneft and has a designed processing capacity of about 7 million tons of crude oil per year. It is located more than 900 km from the war zone in Ukraine.

Ukrainian Telegram channel Exilenova+ began reporting explosions and air defense activity in Samara Oblast at 3:50 a.m. By 4:24 a.m., the channel posted videos showing a night fire at the refinery. OSINT channel World Militaries identified the AVT-5 unit as the initial fire site.

Russian news Telegram channel Astra separately confirmed the fire at the Kuibyshev refinery.

By morning, the fire was still burning. The smoke plume stretched about 100 km across Samara Oblast, Exilenova+ reported.

The Kuibyshev refinery stopped processing crude in June 2026 after Ukrainian drones hit its AVT-4 and AVT-5 units—the same pair now struck again. Each unit processes about 10,000 tons of crude per day, or roughly 73,000 barrels. The refinery had also suspended operations after a drone attack in August 2025.

Other targets in the overnight wave

Exilenova+ also reported that Ukrainian forces struck a military base in the city of Pochep in Bryansk Oblast overnight, with fire observed at the site. Residents of Tolyatti in Samara Oblast reported explosions, and witnesses suggested the Tolyattikauchuk synthetic rubber plant had been hit, Suspilne reported.

Samara Oblast Governor Vyacheslav Fedorishchev confirmed the attack, claiming Russian air defenses intercepted "dozens of drones." He said drones "targeted industrial enterprises" but did not name which ones. Russia's Defense Ministry claimed 297 Ukrainian drones were intercepted over 14 oblasts and occupied Crimea.

Part of an ongoing campaign against Russian fuel infrastructure

Ukraine's General Staff confirmed strikes on both the Bashneft-UNPZ refinery in Ufa and the Kuibyshev refinery in Samara, with fire observed at both sites. Ukraine has been striking Russian refineries continuously for months—hitting targets in Saratov and Volgograd on 11 September, Slavyansk-na-Kubani on 14 September, Syzran on 15 September, Yaroslavl on 17 September, and Ufa on 21 September, the night before the Kuibyshev strike. Earlier, the General Staff said the campaign has disabled 45% of Russia's oil-refining capacity. The strikes have also pushed Russia's fuel crisis into Central Asia, where shortages forced Kazakhstan to seek emergency supplies.

Trump urged Zelenskyy to stop the campaign for the second time in a week during their 21 September call, telling him "don't hit diesel fuel" and blaming Ukrainian strikes—not the Iran conflict—for rising US diesel prices.