Russia killed Alexei Navalny with frog toxin, UK and four European allies say

Intelligence agencies say deadly toxin in skin of Ecuador dart frogs found in Navalny's body and highly likely resulted in his death

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Alexei Navalny, the Russian opposition leader, was killed by dart frog poison administered by the Russian state two years ago, a multi-intelligence agency inquiry has found, according to a statement released by five countries, the UK, France, Germany, Sweden and the Netherlands.

The US was not one of the intelligence agencies making the claim.