In the early hours of June 3, Ukrainian drones flew more than 1,000 kilometers into Russian territory and struck the St. Petersburg Oil Terminal, one of Russia's largest fuel storage and export facilities, setting a massive fire that sent columns of black smoke rising over the city's port. Hours later, Ukraine's Unmanned Systems Forces confirmed they had also hit the corvette Boikiy of the Russian Baltic Fleet at the Kronstadt Naval Base, sending a blaze erupting around the ship's bridge. The twin strikes landed on the opening day of the St. Petersburg International Economic Forum (SPIEF), Russia's most prominent annual business summit, where Putin had invited delegations from more than 130 countries to project an image of economic resilience.
The Oil Terminal Strike
The St. Petersburg Oil Terminal sits on the Gulf of Finland at the city's Great Port, with a reported throughput of 12.5 million tons of petroleum products per year. Residents posted video footage of explosions and fire overnight; Russian analysis channel Astra confirmed drones struck the terminal directly. Leningrad Oblast Governor Aleksandr Drozdenko reported that 50 drones were shot down over the region, but did not address the fires at the port. Russia's Defense Ministry claimed its air defenses downed 354 Ukrainian drones across the country overnight.
Flights were disrupted at St. Petersburg's Pulkovo Airport, with nearly 30 flights delayed for more than two hours and nine others diverted to other airfields, according to Russian state news outlet TASS.
The terminal lies roughly 17 kilometers from the Expoforum convention center where SPIEF was set to open. The forum runs June 3 through 5, with Putin scheduled to deliver a keynote plenary address on June 5. Whether that appearance proceeds under current security conditions remains unclear.
The Boikiy Corvette and Kronstadt
Video posted by Unmanned Systems Forces commander Robert "Madyar" Brovdi showed two drones striking the Boikiy from above, with a large blaze erupting around the bridge. Analysts say the drones appeared to strike the center of the ship, where its multi-function radar, communications equipment, and fire control systems are housed.
"Every repair takes up human resources and financial resources that are needed for other goals in a war," retired Ukrainian naval officer and analyst Pavlo Lakiychuk told Euromaidan Press.
"The corvette was deflowered by the birds of the 1st Separate Center of the Unmanned Systems Forces." — Robert "Madyar" Brovdi, Unmanned Systems Forces commander
The Boikiy is a Stereguschiy-class corvette, launched in 2011 and commissioned in 2013, displacing 2,250 tons when fully laden. It is armed with Kh-35 anti-ship missiles, the same family Ukraine adapted into the Neptune missiles that sank Russia's Black Sea Fleet flagship Moskva in 2022. The vessel had been in the Veleshchynsky dry dock at Kronstadt since February for maintenance. The drone strike now extends that sidelining significantly, along with the cost of repairing sophisticated electronics that are notoriously difficult to recalibrate even under normal conditions.
The Boikiy had previously been used to escort Russia's shadow fleet oil tankers in the Baltic Sea, providing cover for the vessels that help Moscow evade Western sanctions and continue oil exports. Knocking it out of commission directly affects both naval capacity and that escort mission.
Why SPIEF and Why Now
Putin has used SPIEF annually to assert that Russia's economy remains open for business despite the full-scale invasion of Ukraine and Western sanctions. During last year's forum speech, Putin proclaimed that "all of Ukraine" belonged to Russia. A member of the Trump administration, Rodney Mims Cook Jr., chairman of a federal arts and architecture advisory body, attended this year's forum as the first known American official to appear at the event in several years. Conservative commentator Candice Owens also attended.
Ukraine's strikes came one day after Russia launched a massive aerial assault on Kyiv, Dnipro, and other Ukrainian cities, killing at least 23 people, including two children, and wounding over 100. Ukraine's response was not limited to St. Petersburg: Unmanned Systems Forces also struck a weapons manufacturing plant in Russia's Tambov Oblast, 600 kilometers from the Ukrainian border, which produces aviation and missile control systems.
The scale of the overnight operation underscores how Ukraine has extended its deep-strike reach. The April 2026 strike on the Shagol airfield in Chelyabinsk reached 1,700 kilometers from the Ukrainian border. Tuesday's St. Petersburg operation reached 1,100 kilometers. Russian cities that once felt insulated from the war no longer are, and that shift carries weight with the Russian public: according to recent polling cited by the Kyiv Independent, Russians are increasingly worried about strikes at home rather than events at the front.
Russia's Shrinking Oil Industry
The timing of the oil terminal strike carries additional weight. According to Euromaidan Press, 40% of Russia's refining capacity is now offline following cumulative Ukrainian drone strikes, with fuel shortages spreading to St. Petersburg, Belgorod, Kursk, and occupied Luhansk. The St. Petersburg Oil Terminal attack adds pressure to infrastructure already under strain. Russia's oil revenue is the primary financial engine sustaining the war; attacking fuel storage and export facilities is a core component of Ukraine's strategy to cut off that funding at the source.
In September 2025, Ukrainian forces struck Primorsk, Russia's largest oil-loading port on the Baltic Sea, forcing a suspension of operations. The June 3 attack on the St. Petersburg terminal follows that same strategic logic, targeting export capacity in the same maritime corridor. In May 2026, Russia lost more territory than it gained for the first time since 2023, a development that tracks alongside the sustained campaign of deep strikes on Russian logistics and energy infrastructure.
Sources
- Kyiv Independent: Fire, Smoke Greet Putin's Economic Forum as Ukraine Strikes St. Petersburg Oil Terminal in Major Attack
- Euromaidan Press: Russian Corvette Stationed Near St. Petersburg for Repairs Now Needs More of Them After Ukrainian Strike
- NPR: Ukrainian Drones Strike a St. Petersburg Oil Terminal Ahead of Putin Visit
- CNN: Ukrainian Drones Strike St. Petersburg, Hours Before 'Putin's Davos' Opens
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