The next thing to do after seeing The Quiet American is to see the version done 44 years later. The novel by Graham Greene is set in French Indo-China in 1952 and this version is prophetic. The other one surely has the advantage of a whole lot of hindsight. This film done in 1958 has a lot of foresight.
I don't know what to make of Audie Murphy's character, it's never brought out, but he seems to be a CIA man. In the novel he's from the Ivy League, but due to Murphy's speech pattern, his character is from Texas. He's bringing in plastic for industrial purposes purportedly, but we see how the 'plastic' is really used.
The political picture of Indo-China in 1952 has the United States already seeing the French won't hold on and they're getting ready to put in their own surrogate in when the French do fall. Murphy is forever talking about a 'third force' who will bring western style democracy.
Murphy also becomes romantically involved with Giorgia Moll who is also the mistress of British newspaper correspondent Michael Redgrave. The rivalry between the two prevents either from acting coherently though Redgrave has a much better idea of what's really happening.
Interestingly enough the United Kingdom was also fighting to hold on in Malaya the same way that the French were trying to hold on to Indo-China next door. The British were far more successful though.
The Quiet American should have been seen by policy makers in Washington through six administrations in America. A lot of valuable lessons could have been learned and a lot of valuable lives might never have been lost.