The toxin, epibatidine, can be found in frogs in the wild in South America or manufactured in a lab.

Russian opposition leader Alexei Navalny died in prison after being poisoned with a deadly toxin found in Ecuadorian dart ...

The modern poison has become less a medieval cliché than a geopolitical signature flourish.

Epibatidine is about 100 times more potent than morphine, and derived from frogs native to South America ...

The Kremlin on Monday flatly rejected accusations from five European countries that the Russian state had killed Alexei ...

European allies' findings that Putin critic Alexei Navalny was killed with a rare toxin from poison dart frogs is "troubling, ...

The Russian state killed opposition leader Alexei Navalny using a poison developed from a dart frog toxin, the Foreign Office ...

Russian opposition leader Alexei Navalny was fatally poisoned with a toxin from Ecuadorian dart frogs that is 200 times ...

Russian opposition leader Alexey Navalny was poisoned with a deadly toxin found in the skin of Ecuador dart frogs, the UK’s ...

Five European countries on Saturday accused Russia of ‘poisoning’ opposition leader Alexei Navalny in prison using a ‘rare ...

Dart frogs in captivity do not produce the toxin, and it is not found naturally in Russia, five European governments said.