Philip Dodd and guests explore the art of negotiation and discuss JT Rogers' play Oslo which opens at the National Theatre this week. It draws on the experiences of Norwegian diplomat Mona Juul and her husband, social scientist Terje Rød-Larsen who fixed secret meetings between the State of Israel and the Palestine Liberation Organisation. Sir John Jenkins is a former diplomat and Executive Director of The International Institute for Strategic Studies - Middle East. He's been HM Consul-General in Israel, and Ambassador to Syria, Iraq and Saudia Arabia. Gabrielle Rifkind is a senior consultant to the Middle East Programme, which she founded and directed until 2015. She is the Director of the Oxford Process, an independent preventive diplomacy initiative pioneered through her dialogue work with Oxford Research Group (ORG). Michael Burleigh is a historian and author of books including A Cultural History of Terrorism; Small Wars, Far Away Places: The Genesis of the Modern World and Moral Combat: A History of World War Two. Dr Beyza Unal is a research fellow with the International Security Department at Chatham House. She specializes in nuclear weapons policies and leads projects on chemical, biological, radiological and nuclear weapons. Dr Unal is also conducting research on cybersecurity. Oslo plays at the National Theatre from 5 - 23 September. It opens in the West End at the Harold Pinter Theatre from 2 October to 30 December. Producer: Eliane Glaser.