Key facts
- Ukraine launched a large-scale drone attack on Moscow and its region during Russia's parliamentary elections.
- The attacks damaged an oil refinery.
- Three people were killed in the Moscow region and two in Russian-held Ukraine.
- Over 1,600 drones were downed during the elections.
- Russia vowed revenge for the attacks.
Ukraine launched a large-scale drone attack on Moscow and its region on the final day of Russia's parliamentary elections, damaging an oil refinery and causing casualties. Reports indicated three people were killed in the Moscow region and two in Russian-held Ukraine, with over 1,600 drones reportedly downed during the electoral period. Russia's ruling United Russia party is on track to easily win the parliamentary election, with partial official results showing the party's lead. Moscow claims the drone attacks were an attempt to disrupt the vote. In response to the attacks, Russia vowed revenge.