Originally Posted by jane doe
Would American military personnel or expatriots remaining in the region be responsible for crop management? Would missing billions be due to crop failures? Unless documentations reveal anything, it's basically a hypothesis. Interest hypothesis, and my imagination would carry on surmising a vietnamese man doing the work.
I would recommend you read a copy of "The Politics of Heroin: CIA Complicity in the Global Drug Trade" by Alfred W. McCoy.
Interesting highlights include CIA complicity in setting up the notorious Golden Triangle. The CIA not only assisted opium growing expatriate Chinese intent on invading the now communist China but help in transporting the opium crops in their dedicated airlines 'Air America'. This is all documented and you can even watch a movie about it starring Mel Gibson.
Also covered is the amount of global governmental corruption in South East Asia during the Vietnam War such as South Vietnam and Thailand. The chief of police in Thailand happened to be the leading gangster and controlled all the drug smuggling, prostitution and extortion rackets.
In Marseille, the site of the notorious 'French Connection', the authorites looked the other way in thanks for services rendered by Corsican thugs on behalf of the French intelligence services on condition that the heroin made there was not sold in France.
This is actually what happens behind closed doors.