The Russian S-400 "Triumf" is Russia most advanced air defense system. It has been introduced in 2007 and received constant upgrades and updates.
Countries like Turkey or India, which purchased those systems, are certainly amazed when realizing what they acquired. The war Ukrainian war absolutely backfired for the Russian military-industrial complex.
https://x.com/Tendar/status/1793960288493908171
Turkey bought the S-400 and as a result lost out on the F-35.
Russia’s S-400 is a disgrace in Syria, says Brigadier General...