"No other major power employs murder as systematically and ruthlessly as Russia does against those seen as betraying its interests abroad. Killings outside Russia were even given legal sanction by the nation’s Parliament in 2006.
Applied most notoriously in the case of Alexander V. Litvinenko, a Putin opponent who died of polonium-210 poisoning in London in 2006, murders and deaths under mysterious circumstances are now seen as such a menace that Kremlin critics now often flee the country and keep their whereabouts secret."
“The government is using the special services to liquidate its enemies,” Gennadi V. Gudkov, a former member of Parliament and onetime lieutenant colonel in the K.G.B., said in an interview. “It was not just Litvinenko, but many others we don’t know about, classified as accidents or maybe semi-accidents.”
Most recently, a coroner ruled that blunt-force trauma caused the death of a Kremlin insider, Mikhail Y. Lesin, 57, in a Washington hotel room last year, not the heart attack his colleagues first said. In July, the Russian Interfax news agency reported that Aleksandr Poteyev, 64, an intelligence officer accused of defecting and betraying a ring of Russian spies living undercover in American suburbs, had died in the United States.