For millennia, wars have raged across the world, splintering nations, creating empires, and triggering widespread human suffering. But why are countries propelled into battle? What determines victory or defeat? And how have key wars altered the course of history? In Wars that Changed the World, these questions are answered through the stories of 25 major world conflicts. Opening with the Great Peloponnesian War almost 2500 years ago, and closing with the ongoing War on Terror, these momentous clashes encompass every historical era, and stretch to all corners of the globe. Military historian Charles Messenger examines the historical background and the diverse reasons for the conflict - whether ideological, religious, or a personal struggle for power - ...