I recall reading, somewhere, where it was claimed to be a false-flag operation. Can't recall the source. Not a great deal of credibility with that, but it was claimed to be so.
fair enough, thanks
Alexander Litvinenko was the source.
https://en.wikipedia.org/wiki/Alexander_Litvinenko
He also claimed that the Dubrovka Theatre was a false flag.
All these sorts of claims were exactly what his anti-Russian Western Intel sponsors wanted to hear.
And probably why he got the polonium tea treatment,
Of course he is the only Western convert to Islam that FR Cold Warriors absolutely believe without question. All they have to do is make damaging claims against Russia.