5. Collective security in the 1920s and 1930s
While it can be argued that there were definitely some successes for the League in the 1920s, most historians agree that the 1930s saw the idea of collective security failing to maintain peace or to resolve key issues resulting from the Peace Treaties. The situation was complicated by the impact of the Great Depression and indeed it could be argued that this global event made the work of the League impossible given...