Ukraine launched large-scale drone and missile attacks on Moscow and surrounding areas on September 20, 2026, striking the Moscow Oil Refinery and other infrastructure while Russia held its parliamentary elections. The attack was described as among the largest-scale strikes on the Russian capital since the war began.
Ukrainian strikes on the Moscow region on 20 September 2026 destroyed the Kapotnya oil refinery and disabled more than 45% of Russia's total refining capacity, according to Ukraine's General Staff. Volodymyr Zelenskyy described the facilities hit as worth billions in support to Russia's war effort.