The UK, Sweden, France, Germany and the Netherlands publicly held Vladimir Putin responsible for Alexei Navalny's poisoning ...

US Secretary of State Marco Rubio acknowledged a troubling report from five European nations attributing opposition leader ...

Presence of a neurotoxin secreted by South American dart frogs was found in samples taken from Alexei Navalny’s body. The ...

Five European governments say tests confirmed Alexei Navalny was poisoned with a lethal dart frog toxin while held in a ...

Epipedobates anthonyi, known as Anthony’s poison arrow frog, typically measures 22mm long. Its skin carries sufficient ...

Labour foreign secretary Yvette Cooper suggested Moscow could face new sanctions, while his widow has called for Vladimir Putin to be held accountable ...

Russia has dismissed claims by Britain and its European allies that Alexei Navalny was killed with dart frog poison, branding them a Western 'information campaign' ...

New sanctions against Moscow could follow from Britain and its allies blaming the Kremlin for poisoning Alexei Navalny, ...

The foreign secretary said the UK would "continue to look at co-ordinated action, including increasing sanctions on the ...

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The UK and four European allies have pinned the blame for the Russian opposition leader’s death on the Russian state.