Oil tycoon, Putin opponent remains in Siberian prison
                                
                                
                                    (Newser) -
                                    A Russian court has rejected Mikhail Khodorkovsky's request for parole on Friday, ordering the jailed oil tycoon to serve out the remainder of his sentence in a ruling his lawyer called politically motivated. Khodorkovsky, the former head of Yukos oil company and once Russia's richest man, was sentenced to 8...