Newsnight - 30/07/2010

In-depth investigation and analysis of the stories behind the day's headlines with Emily Maitlis, featuring an examination of UK Trident and defence spending, and the future of their funding. The full 20 billion pound cost of renewing the UK's Trident nuclear deterrent must be paid for by the Ministry of Defence, George Osborne has said. The chancellor's comments come as Defence Secretary Liam Fox warned it would be 'very difficult' to maintain other MoD projects if more than half its budget went on funding Trident. Paul Mason examines the figures.