1: - Navalny emerges as a foe to Putin's rule, exposes corruption.

2: - 2018: Navalny banned from presidential elections, protests erupt.

3: - 2019: Navalny allies win Moscow election, Putin's party falters.

4: - Navalny poisoned with Novichok, blames Putin for assassination attempt.

5: - Global outrage, Navalny airlifted to Germany for treatment.

6: - 2021: Navalny arrested upon return to Russia, massive protests follow.

7: - Navalny sentenced to prison, sparks international condemnation.

8: - EU imposes sanctions on Russia, demands Navalny's release.

9: - Navalny's imprisonment prolongs battle against Putin's regime.