In 2020 Navalny was poisoned with Novichok, a potent nerve agent, while campaigning for regional elections in Siberia. He was flown to Berlin for treatment and recovered there. Upon his return to Russia, he was immediately arrested and was imprisoned until his death in 2024. An investigation by European governments found that Navalny was poisoned a second time while in prison, and that his death was caused by a fatal dose of poison dart frog toxin.
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