Alexei Navalny, Russian President Vladimir Putin's most formidable opponent, collapsed and died on Friday after a walk at the ‘Polar Wolf’ Arctic penal colony where he was serving a three-decade jail term, the Russian prison service said. #News #Reuters #Newsfeed #alexeinavalny #death #putin #russia Read the story here: https://reut.rs/3wmaIdb 👉 Subscribe: http://smarturl.it/reuterssubscribe Keep up with the latest news from around the world: https://www.reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en