The dark story of Alexander Litvinenko, the one-time KGB officer turned Russian dissident who was killed with a radioactive poison in London last year, gets darker.
A 1998 videotape has surfaced of Litvinenko and two colleagues at the Federal Security Service telling Russian journalist Sergei Dorenko that they feared for their lives because they were ordered to perform crimes and abuse power.
Dorenko talks to Madeleine Brand.
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