Ukrainian military said an overnight drone strike hit a major oil terminal in St Petersburg, Russia's second city, and a naval base of the Russian Baltic Fleet in Kronstadt, President Volodymyr Zelensky said. He described the terminal as key infrastructure that generates revenue for Russia's war effort.

Ukraine has intensified long‑range drone attacks on Russian energy facilities, claiming that nearly 43 % of Russia's oil refining capacity has been disabled, a claim that has not been independently verified. Ukrainian officials say Russian oil and gas installations are legitimate targets because they support the war effort.

Governor Aleksandr Beglov confirmed the terminal was struck during a large drone assault and said no casualties were reported. He reported that 72 drones were shot down over St Petersburg and the surrounding Leningrad region and warned residents to stay indoors until the threat was lifted, noting possible disruptions to mobile internet services. The military said the terminal can produce 12.5 million tonnes of petroleum products per year.

Russia has not issued a public comment. President Vladimir Putin signed a law aimed at boosting domestic fuel supplies after acknowledging fuel shortages linked to Ukrainian attacks. Earlier, Putin said Russian forces had secured the town of Kostyantynivka in the Donetsk region, a claim the Ukrainian military denied, stating the town remains under Ukrainian control despite isolated infiltrations that are being identified and destroyed. The Russian defence ministry said more than 500 Ukrainian drones and missiles were intercepted overnight and in the morning and warned that attacks on civilian facilities would be responded to. Both sides appear to be seeking advantage before the upcoming NATO summit in Turkey. On the same day, Putin sent a congratulatory note to former U.S. President Donald Trump for the U.S. Independence Day, calling for constructive relations.

The situation remains unresolved as both sides continue to exchange statements and military actions.