In 1941, Nazi Germany turned on its former ally, the Soviet Union. One of the strategic objectives of this operation, Barbarossa, was to conquer Leningrad. To discuss the German turn on the Soviet Union and perhaps the most brutal siege of the Second World War, James Rogers is joined by Chris Bellamy, author of Absolute War: Soviet Russia in the Second World War. Chris is Professor Emeritus of Maritime Security at the University of Greenwich and Editor-in-Chief of the International Journal of Maritime Crime and Security.