Alexander Litvinenko's murder: The inside story - BBC Newsnight

Newsnight's Richard Watson has been piecing together the story behind the murder of Alexander Litvinenko, eight years ago in London. He speaks to intelligence sources and key witnesses - about the motives for the killing, the role of the Russian state and the polonium trail left in London. ********** Newsnight is the BBC's flagship news and current affairs TV programme - with analysis, debate, exclusives, and robust interviews. Subscribe to our YouTube channel for highlights and bonus videos http://bbc.in/1iouM30 Follow us on Twitter @BBCNewsnight for the latest updates on #newsnight Add us on Snapchat - our username is 'BBCNewsnight' And follow on Facebook for our best material, an early heads up on what's coming up, and to join in our debates   / bbcnewsnight