Drug warlord Khun Sa reportedly controls some 75 percent of the country's heroin production by the late 1980s.

In 1988, the single largest heroin seizure is made in Bangkok.

The US suspects that the 2,400-pound shipment of heroin, en route to New York City, originated from the Golden Triangle region, controlled by Khun Sa, who on Granada TV accuses the USA of encouraging opium production.

Between January and June 1988, the seropositive rate for sample addict populations in Thailand jumps from 1 to 40 percent.
(Sources: The Politics of Heroin: CIA Complicity in the Global Drug Trade)