Informed comment from 1976. Or is it from 2006?
"Despite the enthusiasm and goodwill, despite the good intentions, the American advisory program was a lamentable disaster that contributed largely to the eventual debacle in Vietnam. It was worse: it was a gigantic con trick foisted on American public opinion. Not so much by those in the field as by those who never walked the field of battle, but strode the corridors of power in Washington, those to whom the Vietnam war started as a kind of theoretical dream of how to combat the spread of Communism, but gradually twisted and writhed into a hellish nightmare." — Nguyen Cao Ky, Former Prime Minister of South Vietnam and ardent anti-Communist, from How We Lost the Vietnam War.
(more quotes in comments)