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

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.

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