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Russian opposition leader Alexei Navalny is the most resilient opponent Vladimir Putin has ever faced. Navalny survived assassination by Novichok, returned to Russia and is now in a prison cell. Stephen Sackur speaks to Navalny\\u2019s chief of staff Leonid Volkov. The opposition movement has supporters willing to take to the streets in anti-Putin protests in Russian towns and cities; but do they have a strategy capable of forcing Putin out of power?
(Photo: Leonid Volkov appears via video link on Hardtalk)
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