A former Russian spy poisoned in Britain and now hospitalized under guard may have been targeted for his criticism of former colleagues and his investigation into the killing of a prominent anti-Kremlin journalist, friends and fellow dissidents said Sunday. Col. Alexander Litvinenko, a former KGB agent, said earlier this week that he fell ill on Nov. 1 following a meal with a contact who claimed to have details about the slaying of Anna Politkovskaya, the Russian journalist gunned down last month in Moscow. Full Story