Some Russians see Machiavellian motives within the security service, writes Helen Womack in Moscow. The forthcoming Russian presidential election might seem a simple affair. The opposition candidates are standing mainly for form's sake, as the popular incumbent, Vladimir Putin, looks set to win a landslide victory. But recent dark happenings suggest murky undercurrents in Russia's political life. Despite more than a decade of supposed democratic reform, Russia can still produce events that are terrifying one minute, farcical the next. "Our country produces the best black theatre in the world," said one Muscovite in the week when at least 39 people...