The main focus of the War Legacies Project is to document the long-term effects of the defoliant known as Agent Orange and provide humanitarian aid to its victims. Agent Orange best known for its widespread use by the U.S. military to clear vegetation during the Vietnam War " is notorious for being laced with a chemical contaminant called 2,3,7,8-Tetrachlorodibenzo-P-dioxin, or TCDD, regarded as one of the most toxic substances ever created. The use of the herbicide in the neutral nation of Laos by the United States " secretly, illegally and in large amounts " remains one of the last untold stories of the American war in Southeast Asia. Only in the last two decades has the United States finally acknowledged and taken responsibility for the legacy of Agent Orange in Vietnam. While records of spraying operations inside Laos exist, the extent to which the U.S. military broke international agreements has never been fully documented, until now. An in-depth, monthslong review of old Air Force records, including details of hundreds of spraying flights, as well as interviews with many residents of villages along the Ho Chi Minh Trail, reveals that, at a conservative estimate, at least 600,000 gallons of herbicides rained down on the ostensibly neutral nation during the war. Of the 517 cases of disabilities and birth defects so far documented by the War Legacies Project in Laos, about three-fourths, like malformed limbs, are identifiable to the untrained eye as ... linked to exposure to Agent Orange.