FILE - In this Sunday, Feb. 24, 2019 file photo, Russian opposition activist Alexei Navalny takes part in a march in memory of opposition leader Boris Nemtsov in Moscow.

Navalny is 'a catalyst for Russians' own discontent' says analyst

For almost 20 years, Navalny has been striking at the Kremlin's Achilles heel of corruption. He may have missed that the thin line has moved, says Mark Galeotti.