The UK and its European allies allege that Russian opposition leader Alexei Navalny was killed using a poison derived from dart frog toxin. This accusation comes two years after Navalny's death in a Siberian penal colony.

• The poison used is identified as epibatidine, a toxin extracted from dart frogs.
• Foreign Secretary Yvette Cooper stated at the Munich Security Conference that "only the Russian government had the means, motive and opportunity" to use such a poison.
• Moscow, through Tass news agency, has dismissed these findings as "an information campaign."
• Navalny, an anti-corruption campaigner, died on February 16, 2024, at the age of 47, having previously been poisoned with a Novichok nerve agent in 2020.