"

 Argument Without End citations are historical transposition? 

There's something in the ""Diem Era"" section stating that McNamara wrote X about motivations in Argument Without End.  I would be leery of ascribing this as a contemporary statement in the 1950s (which is what the phrase indicates), because McNamara wrote the book in 1999, one of several he wrote on Vietnam long after the fact.  It's obviously important (as is the other work), but I think it benefits from hindsight more than being reliable to the times, and I would rather see it placed in its own ""Legacy/Criticism/whatever"" section than being used as a reliable historical source for this article.   "