At the time, I had run-ins with him on several threads (as in this Post 64).
I claimed that the most likely cause of the Kursk's demise was an onboard torpedo accident as they used highly dangerous hydrogen peroxide as propellant fuel.
But, what did I know. :-)
The Michael Rivero standard conspiracy theory was that, if something blew up or sank, it was the fault of the U.S. Government.
Sounds like a raving nutter.