Jonathan Clements is a scriptwriter and the author of a number of books, including a history of the Vikings, a biography of Gustav Mannerheim and a guide to the Silk Road.Robert McNamara is currently a lecturer in International History at the University of Ulster at Coleraine and the author of Britain, Nasser and the Balance of Power in the Middle East, 1952-1972: From the Egyptian Revolution to the Six-Day War.