Drones struck a plant making fuel components for Russia's Kh-101 cruise missiles and a second Yandex data center overnight on 9 October, Russian officials and monitoring channels reported. The same night, fires were reported at a refinery in Russia's far north and an oil depot near Belgorod. Russia claimed it downed more than 500 drones, and Ukraine has not claimed any of the strikes.

Ukraine has spent months hitting refineries and arms suppliers deep inside Russia. Russia, meanwhile, keeps firing Kh-101 cruise missiles at Ukrainian cities, including the one that killed 22 people in Pryluky on 7 October.

The plant behind the Kh-101's fuel

The Redkino Experimental Plant in Tver Oblast came under attack overnight, Ukrainian monitoring channel Exilenova+ reported. It said the plant makes components of Decilin-M, a fuel for Kh-55 and Kh-101 cruise missiles, as well as additives for diesel and aviation kerosene.

Tver Oblast Governor Vitaly Korolev claimed a plant in Redkino caught fire as a drone attack was being repelled. He did not name the plant. No workers were hurt, he said.

The plant also makes ferrocene derivatives, which serve as burn catalysts in solid-fuel rocket motors, Militarnyi reported. The UK sanctioned it in September 2025. Drones attacked it in September 2023 and twice in one night in June 2024, the outlet said.

In February, drones of the Security Service of Ukraine's (SBU) Alpha unit struck the plant, sparking a large fire, SBU sources told Kyiv Post. The Kh-101 is the missile Russia used against Pryluky on 7 October, Ukrainian President Volodymyr Zelenskyy said.

Yandex loses a second data center

Part of Yandex's data center in Kaluga was damaged in the drone attack, and several modules were completely knocked out, the company's press service told Interfax, Russian newspaper Kommersant reported. Some Yandex services may run with interruptions, no one was hurt, and the company is still assessing the damage, Yandex said.

Kaluga Oblast Governor Vladislav Shapsha claimed nine people were injured in the overnight attack on the region. A day earlier, a drone attack forced Yandex to fully shut its data center in Sasovo, Ryazan Oblast.

A refinery in the north, a depot near Belgorod

Locals reported an attack on the Ukhta refinery in the Komi Republic, followed by a fire, Exilenova+ said. The Lukoil-owned plant can process about 4.2 million metric tons of oil a year, making gasoline, diesel, fuel oil, and vacuum gasoil. The extent of the damage is unclear.

An oil depot north of Belgorod was also burning after the night's attack, the channel posted. Belgorod's regional headquarters claimed two people were killed and four injured, including a child, in the Belgorod district.

A large fire also broke out in Pushkino near Moscow, likely at a truck parking lot, Astra reported. The cause is unknown.

Repeated strikes on Redkino target a specialty fuel that Russia's cruise missiles depend on, while two Yandex data centers hit in two nights bring the war to services ordinary Russians use every day.

Editor's note: This is a developing story and is being updated.

Explosions were reported in Moscow overnight on June 26, prompting airport closures, with Russia's Defense Ministry claiming 50 Ukrainian drones were downed across the country.

Moscow Mayor Sergey Sobyanin said emergency services were at the sites where two drones were downed.

According to the Shot Telegram channel, which appears to be close to Russian security forces, debris from a downed drone struck a residential building.

"Alarms went off everywhere," a local resident told the channel.

Ukraine's military regularly strikes military targets deep within Russia in an attempt to diminish Moscow's fighting power as it continues its war against Ukraine.

Russia's Defense Ministry later claimed 50 Ukrainian drones had been downed across the country, two of which were "flying towards Moscow."

The Kyiv Independent could not independently verify these claims.

Kaluga airport and Moscow's Vnukovo airport had flight restrictions imposed amid the drone attack, Artyom Korenyako, a spokesperson for Russia's state aviation agency Rosaviatsia, said early on June 26.

"The airport is temporarily not accepting or sending flights. Aircraft crews, air traffic controllers, and airport services must take all necessary measures to ensure flight safety," he said.

The restrictions were later lifted.

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The Kyiv IndependentTim Zadorozhnyy

Ukrainian drones have forced at least 217 temporary airport closures across Russia since Jan. 1, independent Russian outlet Novaya Gazeta Europe reported on May 14, citing data from Russia's state aviation agency Rosaviatsia.

The figure already surpassed the combined total for all of 2023 and 2024, underscoring Kyiv's growing ability to put pressure on Russia, even in areas far from the border with Ukraine.

According to Serhii Bratchuk, spokesperson for the Ukrainian Defense Army's Southern Division, the surge in disruptions reflects a strategic shift in Ukraine's drone campaign.

"Moscow is the biggest aviation hub in the Russian Federation — flights go everywhere, not only across Russia, but worldwide," he told the Kyiv Independent last month.

"This is about the potential disintegration of Russian regions and the weakening of internal control."

Ukraine has also had remarkable success using first person view (FPV) drones — on June 1, Ukraine launched a game-changing drone attack on four key Russian military airfields, damaging 41 planes, including heavy bombers and rare A-50 spy planes.

Kyiv claimed it disabled 34% of Russia's strategic bomber fleet in what is seen as one of the most daring operations during Russia's full-scale war.

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The Kyiv IndependentThe Kyiv Independent news desk