It is rather looking that this is part of the Ukrainian SOF debacle that led to Ukrainian Intelligence Services giving the Russians the positions of Ukrainian Air Defence facility locations, in the belief that they were talking to a Russian Air Force pilot who was willing to defect with a military aircraft.(I don't know if this against the rules and please warn me if it is but i think this is quite a big of a deal and possibly a huge blow to Russian side)
It seems Russian S-300 missile system has been destroyed by HIMARS in Kherson area, though the Russian claimed it was only a dummy model of
S-300 to bait HIMARS out to reveal its location
The positions of Air Defence in the South of Ukraine were specifically mentioned and we are told that the Russians acted on the information and attacked the AD systems. Pictures of destroyed S-300's and the news of an ongoing purge of the leadership of the Ukrainian Intelligence Services can hardly be a coincidence.