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

Poison dart frogs have fascinated researchers. Now their toxin has allegedly been linked to the death of Russian opposition leader Alexei Navalny.

What is dart frog toxin, the poison linked to Alexei Navalny’s death? - The toxin is reportedly 100 times more powerful than ...

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

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

MOSCOW, Feb 18 (Reuters) - Russia is demanding that European countries who accused Moscow of poisoning Kremlin critic Alexei ...

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

By Andrew Osborn MOSCOW, Feb 16 (Reuters) - The Kremlin on Monday flatly rejected accusations from five European countries ...

Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison ...

Russian opposition figure and outspoken Kremlin critic Alexey Navalny, who died two years ago, was killed while in prison by a lethal toxin found in poison dart frogs in South America, five European ...

Late Russian opposition leader Alexey Navalny's mom says a European assessment that he was poisoned in prison "confirms what ...