Newsnight - 21/09/2010

In-depth investigation and analysis of the stories behind the day's headlines with Jeremy Paxman in London. Kirsty Wark is at the Liberal Democrats' conference in Liverpool, where she speaks to Cabinet minister Chris Huhne; Mark Urban considers how Iran's neighbours should counter the country's military power; and the programme hears from the founder of a movement which promotes one day a year free of war and conflict.