Having had the pleasure of being in country from 66 - 67, my thoughts of Vietnam as an ally is a difficult pill to contemplate swallowing.
We fought the Communists. They learned some lessons from their failed collectivization efforts. Vietnamese, even Communists are nothing if not practical. Collectivization failed and they ditched it. They are still in charge but they are not real Communists any more. They more resemble Mafia in Sicily or 1950s New York City or Havana with an awareness that Viet Nam must become rich and thus capitalist in order to avoid becoming a province of China. You can't do that by toadying to China. They need America and America needs them. Even Clinton understood that. Obama was put off by the Americophilia of Viet Nam and relations retrogressed.
Those half assed lame brained Democrats made a win there impossible. Them and the Walter Cronkites of the world.
I wasn't there, I don't know what you know.
Thank You for your service.
Amen