Alexei Navalny dead: Putin's chief critic's top acts of defiance

Opposition leader Alexei Navalny died in a Russian penal colony on Friday, depriving the Russian opposition of its last major leader.

Navalny emerged over the last decade as President Vladimir Putin’s strongest opponent and the only one with a credible path to victory. His combination of nationalist sentiment with anti-corruption advocacy resonated with much of Russia’s youth. His courtship of the West also helped his position, becoming the second most widely known politician in Russia, behind only its president.