BBC World anchor Gowing chairs this debate about international intervention, peacekeeping and the role of the UN. Tharoor is Director of Special Projects at the UN and has been Kofi Annan's special adviser with specific responsibility for the former Yugoslavia. William Shawcross is the author of Deliver Us From Evil. Retiring from the leading the UN Protection Force in Bosnia, General Sir Michael Rose wrote Fighting For Peace. Bowen is the BBC's Middle Eastern correspondent and frontline war reporter.