One of the worst days ever for the Russian Air Force: Today, at least 4 aircraft- an Su-34 strike jet, an Su-35 fighter and two Mi-8 helicopters, were shot down by anti-air missiles over Bryansk Oblast within Russia.

So far it is unclear what kind of missiles were used. pic.twitter.com/LjipZShRWC

— 🇺🇦 Ukraine Weapons Tracker (@UAWeapons) May 13, 2023