A quarter century after the fall of the Soviet Union, Russia once again looms large over world affairs, from Ukraine to Syria to the 2016 U.S. election. Yet how power works in present-day Russia--how Vladimir Putin came to power and maintains his rule--remains opaque and often misunderstood. In The Putin System, Russian economist and opposition leader Grigory Yavlinsky explains his country's politics from a unique perspective, voicing a...