In this enlightening discussion, historian Richard Overy, expert on World War II and European dictators, delves into the complexities of warfare in his latest book, 'Why War?'. He analyzes the historical significance of conflict, drawing on insights from Einstein and Freud regarding human nature. Overy highlights how early warfare fostered cooperation, explores ecological drivers of violence, and contrasts resource-driven conflicts with belief-based wars. The conversation also touches on the unpredictable nature of power dynamics and the enduring presence of warfare in society.