Psychological War, Intercontinental Ballistic Threat: Russia’s Latest Move Against Ukraine
Though the source of this information remains unclear, the RBC-Ukraine media outlet reported that the Strategic Control channel, which specializes in monitoring radio frequencies and tracking Russian military transport aircraft, was likely the first to release such a warning
According to the Strategic Control channel, the potential use of the RS-26 Rubezh is likely a response to Ukrainian ATACMS ballistic missile strikes.
https://www.kyivpost.com/post/4256950/50 on it being BS, but if the Russians do fire an Avangard at kiev, i hope they put a conventional warhead in it.