The Golden Crescent is the name given to one of Asia's two principal areas of illicit opium production (with the other being the Golden Triangle), located at the crossroads of Central, South, and Western Asia. This space overlaps three nations, Afghanistan, Iran, and Pakistan, whose mountainous peripheries define the crescent.
The United Nations Office on Drugs and Crime (UNODC) heroin production estimates for the past 10 years show significant changes in the primary source areas. In 1991, Afghanistan became the world's primary opium producer, with a yield of 1,782 metric tons (U.S. State Department estimates), surpassing Myanmar, formerly the world leader in opium production. The decrease in heroin production from Myanmar is the result of several years of unfavorable growing conditions and new government policies of forced eradication. Afghan heroin production increased during the same time frame, with a notable decrease in 2001 allegedly as a result of the Taliban's fatwa against heroin production. Afghanistan now produces over 90% of the world's non-pharmaceutical-grade opium. In addition to opiates, Afghanistan is also the world's largest producer of hashish.
The Golden Crescent has a much longer history of opium production than does Southeast Asia's Golden Triangle. The Golden Triangle emerged as a modern-day opium-producing entity only in the 1980s, after the Golden Crescent did so in the 1950s. The Golden Triangle began making an impact on the opium and morphine market in the 1980s and has steadily increased its output since then in order to match the increasing demand. During the invasion of Afghanistan in 2001, a retaliation to the September 11th terrorist attacks, the Golden Crescent’s opium production took a huge hit, producing almost 90% less opium than in 2000.