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The Kremlin even suggested that Leonid Nevzlin, a wealthy oil executive who fled Russia and lives in Israel, might have been involved. There was no proof for any of these assertions. Last July, however, the Duma passed a law, introduced by the Kremlin, to permit the assassination of “enemies of the Russian regime” abroad. For people like Boris Berezovsky, whose hatred for Putin has become an obsession, the new law explained everything.
“This guy is a K.G.B. guy,’’ Berezovsky told me one afternoon over tea at a London hotel. “This guy issues a law allowing the Russians to kill opponents abroad. So they kill opponents abroad.’’ His voice rose, and he shrugged, and then he glanced at me as if to say, How could one draw any other conclusion? “This is absolutely logical. Why did they issue this law? For what? Because this is Russia and nobody agrees to kill without the signature of somebody more important who gave the order.’’ The Kremlin has denied any involvement in Litvinenko’s death. Whatever the truth, the manner in which he died has tarnished Putin’s reputation in the West. And so has the execution of a journalist who had been accused of nothing more than doing her job.
http://www.newyorker.com/fact/content/articles/070129fa_fact_specter