If so, are they really operational? I've read that they would have become useless by now due to radioactive destruction of the key electronics.
As to Russian or ex-Soviet involvement, who would benefit and why from such a demolition? Follow the money and power.
Russian officials confirmed in mid 90s to USA gov
that
IT WAS WHAT THEY DID
USA is the only obstacle to China-Russian domination
You got to read and watch ruski TV:
mostly ALL ruski politicians talk anti american , very intimidating stuff
If USA is weakened: world is tuning to Moscow
they will have us all exterminated
there is no other reason ruski invested around 100 trillion dollars since 1945 in arming themselfs with WMD
They NEVER waste nothing like 100 tril