Ukrainian drone strikes may have knocked out between 20% and 40% of Russia's oil refining capacity.

Source: Financial Times, citing analyst estimates

Details: In June, Russia was processing an average of 4.1 million barrels of oil per day, 28% below the five-year average and 35% below nominal capacity.

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Ukraine significantly intensified strikes on Russian oil infrastructure in May. Since then, ten of Russia's largest refineries have been attacked, including the Omsk refinery 2,500 km from the front line, which accounts for around 7% of the country's refining capacity.