Ukraine's military reported striking four Russian oil facilities overnight on April 18 — refineries in Samara Oblast, an oil terminal in Leningrad Oblast, and a pumping station in Krasnodar Krai — as part of its campaign to cripple Russian war funding by targeting Moscow's oil revenue. The strikes are part of a broader pattern confirmed by independent sources: Ukraine has escalated drone attacks on Russian energy infrastructure since March 2026, reportedly disabling roughly 40% of Russia's oil export capacity during that month. One discrepancy emerged: Russia claimed to intercept 258 drones overnight, but independent reporting found the Defense Ministry stated 219 drones were fired (190 shot down), suggesting either different timeframes or inflated Russian claims.