The U.S. directed the war against South Vietnam. There was a political settlement in 1954. But in the late '50's the United States organized an internal repression in South Vietnam, not using its troops, but using the local apparatus it was constructing. This was a very significant and very effective campaign of violence and terrorism against the Vietminh - which was the communist-led nationalist force that fought the French. And the Vietminh at that time was adhering to the Geneva Accords, hoping that the political settlement would work out in South Vietnam.
Noam ChomskyCompare mathematics and the political sciences - it's quite striking. In mathematics, in physics, people are concerned with what you say, not with your certification. But in order to speak about social reality, you must have the proper credentials, particularly if you depart from the accepted framework of thinking. Generally speaking, it seems fair to say that the richer the intellectual substance of a field, the less there is a concern for credentials, and the greater is the concern for content.
Noam ChomskyWe need not stride resolutely towards catastrophe, merely because those are the marching orders.
Noam Chomsky