Russian opposition leader Alexei Navalny was killed using a deadly toxin found in poison dart frogs in South America, the UK ...

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

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

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

Alexei Navalny, the Russian opposition leader, died from a 'dart frog toxin,' the UK Foreign Office announced.

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

Five European governments say tests confirmed Alexei Navalny was poisoned with a lethal dart frog toxin while held in a ...

According to new test results Russian dissident Alexei Navalny died from the poison of the lethal dart frog - but exactly how did it end his life?

Five European allies on Saturday blamed Russia for killing late Kremlin critic Alexei Navalny using toxin from poison dart ...

The five nations now plan to submit their findings to the Organisation for the Prohibition of Chemical Weapons (OPCW) to ramp ...

Five European countries on Saturday accused Russia of ‘poisoning’ opposition leader Alexei Navalny in prison using a ‘rare toxin’. What is the dart frog toxin?

Species such as the brightly coloured Anthony’s poison arrow frog and the Phantasmal poison frog secrete this substance onto ...