Ukrainian drones set fire to two fuel depots around Sochi and hit a Russian air defense position overnight on 4 September, according to monitoring channels. They also reported that drones struck an explosives factory and a petrochemical plant in Bashkortostan the same night, more than a thousand kilometers from Ukraine. Russian officials acknowledged the depot fire and said nothing about the air defense site.

Two depots burned behind their anti-drone screens

Astra's OSINT analysts geolocated the fires to the Rosneft-Kubannefteprodukt depot in Sochi's Adler district and to the Lukoil-Yugneftprodukt depot on the federal territory of Sirius. Sochi mayor Andrei Proshunin confirmed a fire at a depot. The regional operational headquarters claimed there were no casualties. Sochi is a Russian resort city on the eastern Black Sea coast, about 600 km from the frontline in Ukraine.

The Ukrainian OSINT channel Cyberboroshno identified one of the hit sites as the BATO aviation fuel terminal, which fuels aircraft at airports across Krasnodar Krai. Every tank there stood behind purpose-built protective structures, Militarnyi reported, and the Lukoil site holds 12 tanks with a combined volume of about 8,400 m³. The burning depot sits roughly 100 meters from Sochi international airport, Russia's fifth-busiest by passenger traffic in 2024, the Russian outlet Agentstvo found.

Panoramic imagery from this year shows anti-drone netting around the tanks at both depots. Two days before the strikes, Russian Deputy Prime Minister Aleksandr Novak claimed Russian refineries were better protected than those in the UAE, and Russian President Vladimir Putin said their protection level was now completely different.

An air defense position caught fire near the Abkhazia border

Astra analyzed eyewitness footage and placed a detonation and fire at a launch position near the settlement of Sirius, by the Psou river on the Abkhazia border, where an S-300 or S-400 system is based. The Ukrainian monitoring channels Exilenova+ and Supernova+ said drones struck the air defenses directly. Russia's Defense Ministry and local authorities reported nothing about it.

Drones had tried the same area in May. A Ukrainian sea drone struck the Russian supply vessel Nefrit at Sochi port the previous day.

Explosives and petrochemicals hit in Bashkortostan

Drones reached Sterlitamak on the morning of 4 September, hitting the Avangard plant and the Sterlitamak Petrochemical Plant, footage published by Supernova+ shows. Residents reported a series of explosions, and one man said on video that about a dozen drones had already flown toward the petrochemical works. The frames show Ukrainian FP-1 strike drones. 

 Russia's Defense Ministry claimed it downed 490 drones overnight across several regions, occupied Crimea, and the Black Sea.

All of Lukoil’s major refineries in Russia are now offline after a Ukrainian drone strike halted crude processing at its NORSI plant on 26 August, Reuters reported the shutdown. NORSI is Russia’s fourth-largest refinery and second-largest gasoline producer.

Ukraine’s General Staff said it had struck the refinery in Kstovo, Nizhny Novgorod Oblast, where a fire subsequently broke out. It said the refinery helps supply Russia’s armed forces.

Industry sources told Reuters that several processing units and other plant infrastructure had been damaged. No repair timetable is available, and Lukoil did not respond to the agency’s request for comment.

NORSI can process about 15 million tons of crude annually and produce about 5 million tons of gasoline and more than 5 million tons of diesel, according to Reuters.

A Reuters dispatch in The Moscow Times said Lukoil listed no NORSI-made gasoline, diesel, or other petroleum products for sale on the St. Petersburg International Mercantile Exchange after the shutdown.

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NORSI’s closure followed the complete shutdown of Lukoil’s Perm refinery after a 21 August drone strike. The company’s Volgograd plant had already stopped processing on 31 July.

The Moscow Times listed four previous occasions this year when drone strikes stopped NORSI from processing crude: 5 April, 20 May, 24 June, and 2 July. The latest attack, therefore, produced the plant’s fifth drone-related shutdown in less than five months.

Lukoil also operates a smaller refinery in Ukhta, which remains active.

Kremlin threatens retaliation

Nizhny Novgorod Oblast Governor Gleb Nikitin wrote that Russian forces had “repelled” more than 40 drones. He also reported damage to an unnamed industrial enterprise, several homes, and cars.

A day later, Kremlin spokesperson Dmitry Peskov promised a “harsh response” to Ukrainian strikes on Russia’s economic and trade infrastructure.

Russia is facing its second bout of fuel shortages this summer. Gasoline sales limits have returned to Moscow and St. Petersburg, while Rosneft has capped purchases at 30 liters per vehicle across its filling-station network, The Moscow Times reported.

Kommersant reported that Astrakhan Oblast had capped gasoline purchases at 30 liters and was serving drivers according to odd- and even-numbered license plates. Orenburg Oblast introduced a similar system and capped purchases at 30 liters to preserve supplies for emergency services and public transport, Governor Yevgeny Solntsev announced.

Five days before NORSI stopped, the Russian government ordered officials to distribute available fuel more evenly between and within regions. Russia also plans to extend its diesel export ban through September as refinery outages constrain domestic supplies.

Ukraine struck one of Russia's largest oil refineries deep in the Urals and a military airfield overnight in a long-range attack, Ukrainian President Volodymyr Zelenskyy announced on 21 August. The Ukrainian Army's General Staff confirmed the refinery and airfield hits, while Zelenskyy said the same night also reached the Black Sea and brought fresh damage from earlier strikes on a Russian warplane and a drone-launch site.

Fire at a major Lukoil refinery in Perm

Zelenskyy said the overnight drones hit the Lukoil-Permnefteorgsintez refinery — known as PNOS — in Perm, where the General Staff recorded a fire on the plant's grounds. The target sits more than 1,500 km from Ukraine's northern border, in a region near the Ural Mountains.

The refinery is one of Russia's largest, able to process more than 13 million tons of crude a year, with more than half its output sold abroad until recently. It supplies fuel to both Russia's economy and its army.

Ukrainian Telegram channels Supernova+ and Exilenova+ shared footage of explosions and a rising plume, with locals reporting a series of blasts at the site. Russia's Perm Krai authorities claimed they repelled the attack and downed 16 drones.

Kyiv has repeatedly hit the plant through the year. After a strike at the end of July, it had been running well below capacity.

Airfield, Black Sea, and other targets the same night

The General Staff said the same night's drones also struck the Marinovka military airfield in Volgograd Oblast, located in Russia's Volga region, with the damage still being assessed, while Zelenskyy added that Ukraine achieved unspecified results in the Black Sea. The military also reported hitting a drone storage and launch site near Donetsk, a materiel warehouse in occupied Crimea, two command posts in Donetsk and Zaporizhzhia oblasts, and six relay stations in Crimea used to steer Russia's Geran and Gerbera attack drones.

Zelenskyy also confirmed damage from earlier strikes: a Russian Su-34 fighter-bomber hit at the Akhtubinsk airfield, about 600 km from the front line, and a drone store and launch site struck at Primorsko-Akhtarsk, roughly 180 km away. The strike extends a run of deep hits this month, from the TANECO refinery in Tatarstan and a Black Sea oil terminal to three refineries hit in one night and an Omsk refinery struck 2,500 km away in Siberia.