Europeans say Russia poisoned dissident Alexey Navalny with dart frog toxin

In February 2026, five European countries announced that lab tests indicated Russian dissident Alexey Navalny was poisoned with a rare dart frog toxin in 2024. At the time of his death, Navalny was serving a 19-year prison sentence in a Siberian prison. The European nations allege the poisoning was the cause of death. Moscow has rejected these claims, asserting that Navalny died of natural causes. The Russian government dismisses the European findings as Western disinformation. The announcement reopens questions surrounding the circumstances of Navalny's death.