Summary: Andrew Marr discusses foreign intervention with the Conservative MP Rory Stewart and the former intelligence officer, Frank Ledwidge. The BBC's security correspondent Gordon Corera discusses the role of the British secret service, from the Cold War days of spies lurking in the shadows, to the disaster of the 'dodgy dossier' on Iraq. And Dr Rosemary Hollis, Professor of Middle East Policy Studies, considers the impact of recent revelations of complicity with Gaddafi's regime, and how 9/11 has skewed international relations.
