Putin critic Alexey Navalny arrested on his return to Moscow

Putin critic Alexey Navalny arrested on his return to Moscow
Putin critic Alexey Navalny arrested on his return to Moscow

Russia’s leading Kremlin critic, Alexey Navalny, was detained by local police moments after his return to the country and five months after he was poisoned with the nerve agent Novichok. CNN’s Frederik Pleitgen reports.