Gabriel Morris Kolko was an American historian. His research interests included American capitalism and political history, the Progressive Era, and U.S. foreign policy in the 20th century. One of the best-known revisionist historians to write about the Cold War, he was also credited as "an incisive critic of the Progressive Era and its relationship to the American empire." U.S. historian Paul Buhle summarized Kolko's career when he described him as "a major theorist of what came to be called Corporate Liberalism...[and] a very major historian of the Vietnam War and its assorted war crimes."

The Vietnam War was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was a major conflict of the Cold War. While the war was officially fought between North Vietnam and South Vietnam, the north was supported by the Soviet Union, China, and other communist states, while the south was supported by the United States and other anti-communist allies, making the war a proxy war between the United States and the Soviet Union. It lasted almost 20 years, with direct U.S. military involvement ending in 1973. The conflict also spilled over into neighboring states, exacerbating the Laotian Civil War and the Cambodian Civil War, which ended with all three countries officially becoming communist states by 1976.