Vietnam
The Golden Triangle is one of Asia’s two main opium-producing areas. It is an area that overlaps the mountains of three countries of Southeast Asia: Myanmar, Laos and Thailand. It has been one of the most extensive opium-producing areas of Asia and of the world since the 1950s. Most of the world’s heroin came from the Golden Triangle until the early 21st century when Afghanistan became the world’s largest producer. The Golden Triangle designates the confluence of the Ruak River and the Mekong River, since the term has been appropriated by the Thai tourist industry to describe the nearby border tripoint of Thailand, Laos and Myanmar.