In 2012, opium grown in Afghanistan accounted for 75 percent of heroin used around the world. The United Nations Office on Drugs and Crime forecasts that in 2013, Afghan opium will account for 90 percent of the world’s heroin market.
Out of the 34 provinces in the country, opium cultivation increased in 12 of them in 2012. Areas where cultivation has increased dramatically is where United States troops were stationed. Over 70 percent of the opium cultivation takes place in three provinces where the American surge took place.
Source: Rod Nordland, “Production of Opium by Afghans Is Up Again,” New York Times, April 15, 2013.