A prominent Putin critic is poisoned by Russian agents, using a rare poison that could only have come from a handful of places (including, for instance, Russian nuclear reactors), and the Russian agents flee to Russia, where the Russian government protects them (and where one of them ends up serving in the Duma).
And you don’t see pretty strong circumstantial evidence of Putin’s involvement?
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Polonium-210 On Sale For A Mere $69
http://www.cbsnews.com/news/polonium-210-on-sale-for-a-mere-69/
The Web is abuzz with nuclear news these days. "The radioactive material that killed a former Russian spy in Britain can be bought on the Internet for $69." That was InformationWeek's lead. And it's been picked up all over the place. Yes, Polonium-210, "which experts say is many times more deadly than cyanide," the story notes, "can be bought legally through United Nuclear Scientific Supplies, a mail-order company that sells through the Web.