It is no coincidence that the UK and its allies chose a security conference in Munich to accuse the Kremlin of killing Russian opposition leader Alexei Navalny with dart frog poison. The extraordinary ...

Add Yahoo as a preferred source to see more of our stories on Google. Alexei Navalny died after collapsing while taking a walk at a Siberian prison - Moscow City Court/via AP Alexei Navalny was killed ...

Two years after Russian opposition leader Alexei Navalny died in prison, five European countries claim they have identified the substance that killed him: epibatidine, an extremely lethal toxin ...

BUDAPEST, Feb 15 (Reuters) - U.S. Secretary of State Marco Rubio on Sunday called "troubling" a report by five European allies blaming Russia for killing late Kremlin critic Alexei Navalny using toxin ...

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Five European nations have accused Russia of using a deadly toxin taken from a South American frog to kill opposition figure Alexei Navalny two years ago. In a joint statement, the United Kingdom, ...

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A joint report alleging that a poison dart frog toxin has been linked to the death of Russian opposition leader Alexei Navalny rippled quickly around the globe among scientists. The allegations raised ...

Russian opposition leader Alexei Navalny was killed by a “deadly toxin” extracted from an Ecuadorian frog, according to the foreign ministries of five European countries. Russian authorities have ...

Epibatidine is about 100 times more potent than morphine, and derived from frogs native to South America Russia killed Alexei Navalny with frog toxin, UK and four European allies say Epibatidine, the ...