Why do humans go to war? Is peace ever truly possible? In this podcast historian of the Second World War and expert on totalitarian regimes and military conflict joins us to talk about his latest book, "Why War?". Drawing on decades of research, Prof Overy talks about organized violence from prehistoric times to modern state conflicts. He explains how war has evolved and what drives it and how leaders can use provocative language to brainwash their people before invading another country. What we can learn from nations, including India, that have managed to avert a full-scale war despite decades of conflicts with their neighbouring countries? Despite all the grim violence around us in Gaza and Ukraine, Prof Overy remains hopeful and says that fears of a third world war may be overblown.