Poison, a plane crash and falling from a window: How Putin’s critics and rivals have met mysterious ends

The late Kremlin critic Alexei Navalny was poisoned with a lethal toxin during his detention in a harsh Arctic penal colony two years ago, the UK and its European allies have concluded.

Analysis of samples conclusively confirmed the presence of Epibatidine, a toxin found in poison dart frogs in South America and not naturally found in Russia, according to a joint statement issued on Saturday.