On this episode of Talking History, as part of our series on the history of totalitarian dictators, we're looking at the rise and fall of Adolf Hitler and finding out why he lost the Second World War so spectacularly.

Featuring: Prof Frank McDonough, specialist on the history of the Third Reich; R.T. Howard, author of the book 'Spying on the Reich: The Cold War Against Hitler'; and Prof Devin Pendas of Boston College, co-chair of the Contemporary Europe Study Group at the Center for European Studies at Harvard University and author of 'Democracy, Nazi Trials and Transitional Justice in Germany, 1945-1950'.