[Fedora]

Quite interesting, though given the source I'd like to see some independent corroboration:

Paul Klebnikov, Godfather of the Kremlin: the Life and Times of Boris Berezovsky

[FairOpinion]

My first reaction was to say: "interesting, IF TRUE", but then I took off the second part, because he did report it to the British and US intel agencies, who followed up on it, so it's likely true.