Ukrainian President Volodymyr Zelenskyy has confirmed that Ukrainian drones struck the Moscow Oil Refinery, owned by Russian energy company Gazpromneft, with Moscow's mayor Sergei Sobyanin also acknowledging damage to the facility. The refinery — the largest in the Moscow region — processed 11.6 million tonnes of crude oil in 2024, producing significant volumes of petrol, diesel, and aviation fuel. The strike is seen as part of a broader Ukrainian campaign to pressure Russia during stalled peace negotiations, with the number of drone attacks on Russian refineries having doubled since the start of 2026.