The year 2015 marks the 50th anniversary of the Americanization of the Vietnam War, a subject that has sparked intense and enduring debate. Now available in a revised and updated second edition, Vietnam: Explaining Americas Lost War is an award-winning historiography of this seminal conflict of the 20th century. This textbook brings together description and analysis of the most important issues in the field as put forth by scholars, participants, and journalists over the last half century. It addresses key questions about the war. Written by a well-respected scholar who has spent decades studying the consequences of the Vietnam War, this text presents the issues in a clear and compelling style that encourages straightforward understanding of complex issues and allows readers to draw their own conclusions about the reasons for Americas failure in the war. A final chapter assesses the competing lessons of the war as drawn from orthodox and revisionist histories and the extent to which they have influenced American national security policy over the last forty years.