Aleksei Navalny was most likely poisoned by a toxin found in a South American frog, five European countries said on Saturday, ...

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

LONDON (AP) — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday.

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