MELEKHOVO, Russia—A Russian court convicted imprisoned opposition leader Alexei Navalny on charges of extremism and sentenced him to 19 years in prison on Friday. Mr. Navalny is already serving a nine-year term on a variety of charges that he says were politically motivated.
The new charges are related to the activities of Mr. Navalny’s anti-corruption foundation and statements by his top associates. It was his fifth criminal conviction and his third and longest prison term—all of which his supporters see as a deliberate Kremlin strategy to silence its most ardent opponent.
