http://www.telegraph.co.uk/comment/personal-view/11441799/Boris-Nemtsov-murder-Putin-now-governs-mostly-through-terror-and-propaganda.html
Any plot against Boris Nemtsov would have been known by the Kremlin. Putin either killed him or tolerated his death. Vladimir Putin has ruled Russia with three things: money, propaganda and terror. When the Russian economy was booming and the oil price was over $100 a barrel, Putin ruled Russia almost entirely with money – throwing cash at the elites and at the people – with a small dose of propaganda and a tiny injection here and there of terror. Now the money is running out, the equation has shifted. Today, Russia is ruled mostly through propaganda and terror.