In conversation with Gerry Foley Tim Marshall is a leading authority on foreign affairs with more than 30 years of reporting experience. He was diplomatic editor at Sky News, and worked for the BBC and LBC/IRN radio. He has reported from 40 countries and covered conflicts in Croatia, Bosnia, Macedonia, Kosovo, Afghanistan, Iraq, Lebanon, Syria and Israel. He is the author of the No. 1 Sunday Times bestsellers The Power of Geography and The Future of Geography. Today he discusses his updated 10-year anniversary edition of the runaway bestseller, Prisoners of Geography. A fascinating afternoon of geopolitics and a window into the past, present and future of our rapidly changing world. Photo credit Nick Gregan