Navalny died after being poisoned with dart frog toxin by Russia, UK says - Britain and its allies said only Russia would have the ‘means, motive and disregard’ to launch such an attack – as his widow

European countries say tests show Russia's Alexei Navalny was poisoned with a substance developed from a toxin found in Ecuadorian dart frogs.

The foreign ministries of the U.K., France, Germany, Sweden and the Netherlands said Saturday that analysis of samples from Navalny, who died two years ago, "have conclusively confirmed the presence o...