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 before that was working 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 five books including the no.1 Sunday Times bestseller Prisoners of Geography; Worth Dying For: The Power and Politics of Flags; and Divided: Why We're Living in Age of Walls. He is the founder and editor of TheWhatandtheWhy.com.