Could a swarm of unmanned aircraft hundreds of miles from the front lines alter the course of a nation’s energy supply? In the early hours of September 14, Ukraine’s Unmanned Systems Forces launched a precision drone strike deep into Russia’s Leningrad region, targeting the Kirishi Oil Refinery known locally as KINEF one of the country’s largest and most strategically vital petroleum processing facilities. The refinery, capable of processing more than 20 million tons of crude annually, produces about 6.6 percent of Russia’s total refining output.
Regional governor Alexander Drozdenko announced the initial warning of unknown UAVs at 2:40 a.m., releasing safety notices that instructed citizens to stay indoors, keep away from windows, and go to windowless rooms during air raid warnings. Shortly afterward, Russian air defense systems engaged, with Drozdenko later confirming the destruction of seven drones over the Leningrad region. Despite these interceptions, a massive fire erupted in Kirishi’s industrial zone, visible in images showing flames and explosions rising from the refinery complex
It was conducted by Ukraine’s newly institutionalized Unmanned Systems Forces (USF), a new branch established to oversee the deployment and strategic employment of unmanned systems throughout the military. These forces combine battle-proven innovations at pace, sometimes in close cooperation with local drone producers. The attack on KINEF highlights the battlefield range of Ukraine’s long-range UAVs, which have hit targets over 800 kilometers from the border. As per open-source intelligence, one of the refinery’s main processing trains able to process about 150,000 barrels per day was knocked out, necessitating production reductions of close to half.
The inventory of Ukraine’s drone forces comprises first-person view (FPV) attack drones, long-range bomber unmanned air vehicles (UAVs), and sophisticated systems that integrate cutting-edge AI capabilities. The platforms are not only designed to achieve precision targeting but also survivability against Russia’s multilayer air defense complex. The KINEF attack showcased the capability to break through defenses away from areas under dispute, something that was achieved through synergizing low radar cross-section designs, terrain-following flight profiles, and integration of real-time intelligence.
Russian air defense in the area depends on phased-array radar and surface-to-air missile batteries to detect and counter aerial attack. The latest detection technology, including 3D radar to track low-altitude, low-speed targets, is used to counter UAV infiltrations. However, as the Kirishi attack demonstrates, saturation techniques firing multiple drones at once can saturate tracking and interception capability, and some UAVs will be able to reach their target.
The engineering problem of protecting oil refineries from air attack is significant. Plants such as KINEF use fire prevention systems such as foam-based suppression, water deluge networks, and gas detection sensors to prevent the hazard of massive explosion. Yet, a direct hit on key processing units can cause hydrocarbon vapors to catch fire quicker than suppression can react. Firefighting brigades in Kirishi labored all night to keep the fire contained, but the refining infrastructure was already badly damaged.
The wider campaign on Russian refineries has gained momentum since August, with Ukraine hitting at least 21 of Russia’s 38 major refineries since January. Estimates by JPMorgan estimate national refinery runs to have dropped below 5 million barrels per day, cutting back around 500,000 barrels daily from historic highs. The Kremlin retaliated with export bans on diesel and gasoline, but shortages and spikes in prices were reported in several regions, with long lines at petrol stations and some independent retailers ceasing sales altogether.
For Ukraine, attacks on energy infrastructure are both tactical and strategic reduce fuel supplies for Russian troops while stripping the economic foundation that supports the war. President Volodymyr Zelensky has described such operations as “the most effective sanctions the ones that work the fastest.” USF’s adoption of more than 170 unmanned systems for frontline and deep-strike missions is evidence of a doctrine in which technology, intelligence, and operational flexibility come together to achieve maximum effect.
The Kirishi strike forms the long-term attempt to reduce Russia’s military-economic capability. With each successful attack, Ukraine proves the improving capabilities of its drone fleet and the vulnerability in even the most well-defended industrial targets.
