A more plausible explanation is that the CIA needs "dark" money (untraceable) in order to operate their shady activities, and that the drug trade is an ideal me

A more plausible explanation is that the CIA needs "dark" money (untraceable) in order to operate their shady activities, and that the drug trade is an ideal means for obtaining this money. This is no conspiracy theory but backed up by solid journalism and research - many books by respectable authors have been written on the subject. The CIA has been involved in drug trafficking for decades.