Russia 'used frog toxin' to kill Alexei Navalny

European countries say tests show Russia's Alexei Navalny was poisoned with a substance developed from a toxin found in Ecuadorian dart frogs. But the Kremlin denies killing the opposition leader. Also: Marco Rubio delivers a softer line to America's European allies at the Munich Security Conference; there are more global protests against the Iranian government; families of Venezuelan political prisoners go on hunger strike; the "Trump slump" affects US tourism; Cuba's cigar festival is snuffed out; palaeontologists discover giant sloth and elephant-like mastodon fossils; and we visit the British inmates learning how to garden. The Global News Podcast brings you the breaking news you need to hear, as it happens. Listen for the latest headlines and current affairs from around the world. Politics, economics, climate, business, technology, health – we cover it all with expert analysis and insight. Get the news that matters, delivered twice a day on weekdays and daily at weekends, plus special bonus episodes reacting to urgent breaking stories. Follow or subscribe now and never miss a moment. Get in touch: [email protected]