Ukrainian drone strikes on Russian oil refineries, May 2026

What we know

• Ukrainian drones struck at least one oil terminal in Russia, triggering a fire, around May 23, 2026.
• Oil refining in central Russia was reported to be at a standstill following Ukrainian drone strikes, per Reuters sources.
• Ukraine's General Staff reported strikes on the Tuapse oil refinery on or around May 27, 2026.
• Russia's Syzran oil refinery halted operations following a Ukrainian drone strike around May 21, 2026.
• AP News reported Ukraine saying its drones hit another refinery deep inside Russia as long-range strikes escalated around May 21.