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 • What is dart frog toxin, which is said to have been used to kill Alexei Navalny? Alexei Navalny, the Russian opposition leader, was killed by dart frog poison (…)