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

Mourners in Moscow have marked two years since Russian opposition leder Alexei Navalny died in an Arctic prison, as a new ...

Close allies of the late opposition figure Alexei Navalny have expressed outrage over an investigative media outlet’s decision to publish his unredacted autopsy photos. Maria Pevchikh, head of the ...

However, the hit squad was exposed when one of its employees was arrested in Colombia in February, according to the Insider.

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

Alexei Navalny, a thorn in the side of the Kremlin and Russia’s most prominent political dissident, died in prison after ...

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

Two years after the death of Russian opposition leader Alexei Navalny, new claims about how he died are intensifying an ...

Britain and its allies said only Russia would have the ‘means, motive and disregard’ to launch such an attack – as his widow calls for Putin to be held accountable ...

Alexei Navalny’s cause of death has yet to be revealed, but the famous Russian dissident’s family claims he was fatally poisoned by a nerve agent on Kremlin dictator Vladimir Putin’s orders. The body ...

An ally of the late opposition leader Alexei Navalny said Friday that Russian authorities have given his mother a deadline to agree to forgo a public funeral or else they’ll bury him on prison grounds ...

The mother of Russia's top opposition leader Alexey Navalny said Thursday that she has seen her son's body and that she is resisting strong pressure by authorities to agree to a secret burial outside ...