It's a story fit for a Hollywood script: anti-corruption crusader survives an assassination attempt, taking on an iron-fist government, inspiring thousands to take to the streets in protest. But this is Russia's reality and one of the biggest political stories in the world. Alexei Navalny, opposition leader and political enemy of Russian president Vladimir Putin, has been sentenced to prison after returning to Russia, following a widely-reported poisoning. Isabelle Khurshudyan, Moscow-based correspondent for the Washington Post, talks to "This Matters" host Adrian Cheung about the mass protests in Russia, Navalny's fight with Putin, and whether this amounts to a real threat against the Kremlin for the first time in decades.

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