The first authoritative history of American's longest war by one of the world's leading scholar-practitioners. The American war in Afghanistan, which began in 2001, is now the longest armed conflict in the nation's history. It is currently winding down, and American troops are likely to leave soon — but only after a stay of nearly two decades. In The American War in Afghanistan, Carter Malkasian provides the first comprehensive history of the entire conflict. Malkasian is both a leading academic authority on the subject and an experienced practitioner, having spent nearly two years working in the Afghan countryside and going on to serve as the senior advisor to General Joseph Dunford, the US military commander in Afghanistan and later the chairman of the joint chiefs of staff. Drawing from a deep well of local knowledge, understanding of Pashto, and review of primary source documents, Malkasian moves through the war's multiple phases: the 2001 invasion and after; the light American