Five European countries say Russia poisoned Alexei Navalny with a rare toxin linked to poison dart frogs. On Saturday, the U.K., France, Germany, Sweden and the Netherlands say European lab tests confirmed epibatidine in his body. They say the toxin does not occur naturally in Russia. They argue Russia has the means, motive and opportunity to administer the poison. They also reported Russia to the chemical weapons watchdog, which did not comment immediately. The Russian opposition leader died in a Russian Arctic penal colony in 2024. Russia denied wrongdoing and says he died naturally.