Kinzhal hypersonic missiles: what are the weapons used by Russia against Ukraine

Russia claims to have used in Ukraine hypersonic missiles. This was reported by the Russian Defense Ministry, quoted by the Tass agency. The missiles would have served to destroy an underground ammunition depot in the west of the country. To be precise, it would be a Kinzhal hypersonic missile. The ministry also reported that it destroyed three S-300 air defense missile systems supplied to Ukrainian troops overnight.