How did the U.S. lose the war in Afghanistan? Who bears responsibility? And what has been the human cost? Drawing on decades of on-the-ground reporting and interviews with Taliban and U.S. officials, this epic three-part investigation traces how America’s 20-year investment in Afghanistan culminated in Taliban victory and examines the missteps and consequences.

How did the U.S. lose the war in Afghanistan? Who bears responsibility? And what has been the human cost? Drawing on decades of on-the-ground reporting and interviews with Taliban and U.S. officials, this epic three-part investigation traces how America’s 20-year investment in Afghanistan culminated in Taliban victory and examines the missteps and consequences.

Part One How did the U.S. lose the war in Afghanistan? Who bears responsibility? And what has been the human cost? Drawing on decades of on-the-ground reporting and interviews with Taliban and U.S. officials, this epic three-part investigation traces how America’s 20-year investment in Afghanistan culminated in Taliban victory and examines the missteps and consequences.