Washington, DC–(ENEWSPF)–August 15, 2012. After decades of denying Vietnamese requests for assistance in a cleanup, the United States launched its first major effort to address environmental contamination brought on by its use of Agent Orange in the Vietnam War, this according to the New York Times. Agent Orange is a toxic herbicide which contains dioxin âa known carcinogen- used by the U.S. military to defoliate Vietnamese forests, which left a legacy of cancer, birth defects, and environmental contamination, with an estimated 3 million Vietnamese people exposed. 
