Professor Sir David Cannadine is Dodge Professor of History at Princeton University and General Editor of the Oxford Dictionary of National Biography. He is one of the world's best-known historians and historical biographers, and an expert on Churchill and political leadership. The author or editor of thirty books, David Cannadine is also a regular broadcaster on radio and television. His most recent publications include The Undivided Past (2013) and George V: the Unexpected King (2014), as well as the series Prime Ministers' Props for BBC Radio 4 (2016).