The War on Terror – A Battlefield Without Borders

Episode 28 of Turning Points: History’s Greatest Battles explores the War on Terror (2001–present) — the global conflict that transformed modern warfare after the September 11 attacks. Following the destruction of the World Trade Center and the Pentagon by al-Qaeda, the United States launched military operations in Afghanistan to remove the Taliban and dismantle terrorist networks. Although the regime fell quickly, insurgency and guerrilla warfare prolonged the conflict for two decades. The war expanded in 2003 with the invasion of Iraq, where instability and sectarian violence created new militant groups. Terrorism became decentralized, spreading across multiple regions, while governments increased surveillance and international intelligence cooperation. The killing of Osama bin Laden in 2011 symbolized a milestone but did not end the conflict, as new organizations such as ISIS emerged and briefly formed a territorial state before being defeated militarily. The War on Terror blurred the line between battlefield and civilian life, introduced drone warfare and counterinsurgency as dominant strategies, and reshaped global politics and security policies. It demonstrated that modern conflicts could be fought against ideologies rather than nations, making victory difficult to define and peace difficult to achieve.