Between 1962 and 1971, the United States sprayed defoliants like Agent Orange over parts of Vietnam and Laos to remove forest cover and food sources for North Vietnamese and Viet Cong forces. These chemical defoliants are estimated to have killed or maimed hundreds of thousands of people and caused long-term health and environmental issues. While the US has acknowledged and taken some responsibility for the impact of these chemicals, many victims and advocates believe more should be done to recognize the harms and provide support. Some online sources argue that the US still stockpiles chemical weapons and has not been fully transparent about past programs and their human costs.