Russia has data on Ukrainian special forces operating in several countries
Disclaimer: TASS is Russian government propaganda, and not a reliable news source.
Russian President’s Special Representative for the Syrian settlement Alexander Lavrentiev believes that “the Kiev regime is afraid to send its military personnel to participate in hostilities, because this threatens them with very large reputational costs in the event of their capture, destruction, and then making this fact public, so they try to act covertly”