- Putin had arch-nemesis Alexei Navalny killed using poison from South American dart frog that is classed as a chemical weapon, says Foreign Office Daily Mail
- Russia killed opposition leader Alexei Navalny using dart frog toxin, UK says BBC
- 5 European nations say Alexei Navalny was poisoned and blame the Kremlin NPR
- Russian opposition leader Alexei Navalny was poisoned by deadly ‘dart frog’ toxin, Europeans say NBC News
- Munich Security Conference live: Russia poisoned Navalny using frog toxin, five European nations say The Guardian
