Protests, poisoning and prison: The life of Russian opposition leader Alexei Navalny

Alexei Navalny, Russia's top opposition leader and President Vladimir Putin's fiercest foe, died in prison on Friday, a statement from the Federal Penitentiary Service said.

Navalny was moved in December from his former prison in central Russia to to a “special regime” penal colony — the highest security level of prisons in Russia — above the Artic Circle.

In a span of a decade, he went from being the Kremlin’s biggest foe to Russia’s most prominent political prisoner.