The roots of the Second World War in Europe lie within the First World War. The 1919 Treaty of Versailles formally ended the war between Germany and the western Allies, but the geopolitical situation it created was far from stable. Ten years later, the Great Depression made things even worse. In this episode, Sean and James discuss the unsettled state of Europe between 1918 and 1930 and the gradual fracturing of the uneasy peace that it enjoyed.