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UK and allies accuse Russia of using rare toxin in Navalny's death
The United Kingdom and its European allies have concluded that Russian opposition leader Alexei Navalny was killed using epibatidine, a lethal toxin derived from South American poison dart frogs. The UK Foreign Office stated that traces of the substance were found in Navalny's body, likely causing his death in a Siberian penal colony two years ago.
Toxin details and effects
Epibatidine is a natural neurotoxin extracted from the skin of Ecuadorian poison dart frogs, including Anthony's poison arrow frog and the Phantasmal poison frog. Toxicology expert Jill Johnson described it as 200 times more potent than morphine. The toxin overstimulates nicotinic receptors in the nervous system, leading to muscle twitching, paralysis, seizures, respiratory failure, and death.
Alastair Hay, a professor of environmental toxicology at the University of Leeds, explained that epibatidine blocks breathing, causing suffocation. He noted that its presence in blood strongly suggests deliberate administration, as the toxin is extremely rare and geographically limited to South America.
Rarity and source of the toxin
Epibatidine is found only in trace amounts in the wild and is not naturally present in Russia. The frogs produce it by consuming specific alkaloid-rich foods, and their diet must remain consistent to maintain toxin levels. Johnson emphasized the near-impossibility of sourcing the toxin from wild frogs, calling it an "incredibly rare method of human poisoning."
The UK and its allies stated that only the Russian state possessed the "means, motive, and opportunity" to deploy such a toxin. They confirmed Navalny's death was caused by epibatidine, as verified by European laboratories.
Russia dismisses accusations
The Kremlin rejected the findings as an "information campaign," according to the Tass news agency. Kremlin spokesperson Maria Zakharova accused Western nations of fabricating the claims to divert attention from their own issues. The Russian embassy in London called the allegations "feeble-mindedness" and "necro-propaganda."
Hamish de Bretton-Gordon, a former UK and NATO chemical weapons expert, urged skepticism toward Kremlin statements. He told BBC Radio 4's Today program that NATO countries had evidence proving Navalny was "murdered by the state."
Navalny's final days
At the time of his death, Navalny had been imprisoned for three years and was recently transferred to an Arctic penal colony. Russian authorities reported that the 47-year-old collapsed after a short walk, complaining of feeling unwell. He never regained consciousness.
Navalny's widow, Yulia Navalnaya, has consistently maintained that her husband was "murdered" by poisoning, contradicting Moscow's claims of natural causes.
