Opposition to United States involvement in the Vietnam War With no clear sign of victory in Vietnam, American military casualties helped stimulate opposition to the war by Americans. In their book "Manufacturing Consent", Noam Chomsky and Edward Herman challenge that traditional view of how the media influenced the war and propose that the media instead censored the more brutal images of the fighting and the death of millions of innocent people. The U.S. became polarized over the war. Many supporters of U.S. involvement argued for what was known as the domino theory, a theory that believed if one country fell to communism, then the bordering countries would be sure
US signals intelligence in the Cold War least in house arrest. A quote from "Life" magazine, generally considered friendly to Diem, suggested that a substantial number of non-communists had been arrested. This is followed by a brief note, "Yet in that same process of neutralizing opposition, Diem set the seeds for his own downfall." This followed by long redactions. Both Diem and the US Military Assistance Advisory Group (MAAG), according to the NSA history, felt the communists were going into "last gasps" in late 1959. US SIGINT support during the Vietnam War came principally from service cryptographic units, with some NSA coordination. Units still belonged to their