Following the arrest and imprisonment of WikiLeaks editor-in-chief, Julian Assange, his lawyer, Mark Stephens, discusses the case against him and the impact of the whistle-blowing website on world politics. Plus, as the Nobel Peace Prize is awarded to jailed dissident, Lui Xiabo, his friend and fellow activist, Yang Jainli, talks about the effect the award will have in China where the authorities have strongly opposed it - and on Mr Xiabo himself. And, Harry Shearer, the actor, comedian and voice of many of the characters in the Simpsons, talks about his new documentary, 'The Big Unease', which investigates the causes of the devastation of New Orleans when Hurricane Katrina hit the city five years ago.