Three years ago, Russian opposition leader Alexei Navalny shocked the world with his courage to return to his home country despite having been poisoned by a nerve agent linked to Russia just a few months earlier.
Upon his arrival, Navalny was immediately detained and later sentenced to 19 years in prison on charges including extremism, embezzlement and fraud — which many saw as a move by the Kremlin to thwart Navalny's political ambitions.
