David Aaronovitch and guests discuss the risk of escalation on Russian borders and further afield and explore what form that might take if it were to happen. Guests: Natia Seskuria, founder and executive director of the Regional Institute for Security Studies (RISS), a Tbilisi-based think tank Dr Jack Watling, Senior Research Fellow for Land Warfare at the Royal United Services Institute, Michael Clarke, Professor of Defence studies and Specialist Advisor to the Joint Committee on the National Security Strategy Mark Galeotti, writer on Russian security affairs and director of the consultancy Mayak Intelligence Presenter: David Aaronovitch Producers: Ben Carter, Kirsteen Knight and Drew Hyndman Sound engineers: James Beard and Nigel Appleton Editor: Richard Vadon