FILE - Russian opposition leader Alexei Navalny, center, addresses supporters and journalists after arriving from Kirov at a railway station in Moscow, Russia, Saturday, July 20, 2013. Navalny was the most well-known Russian opposition leader and his death in a prison colony has dealt it a heavy blow as President Vladimir Putin’s biggest political foe has been silenced forever. There is no anti-war candidate on the ballot to give Putin even a token challenge in next month’s election for a sixth term, and most of the opposition is scattered abroad in exile, or in prison at home. (AP Photo/ Dmitry Lovetsky, File)