"[...] As to negotiations [to end the Vietnam War], there is, in fact, very little to negotiate. Withdrawal of American troops must be a unilateral act, as the invasion of Vietnam by the American government was a unilateral act in the first place. Those who had been calling for ‘negotiations now’ were deluding themselves and others, just as those who now call for a cease-fire that will leave an American expeditionary force in Vietnam are not facing reality."
January 1, 1970
https://en.wikiquote.org/wiki/Noam_Chomsky