Number of drug addicts in Iran 'doubles' in six years

Iran lies directly in the path of the world’s largest flow of heroin. Finished heroin, partially refined heroin in the form of morphine or raw opium leave Afghanistan and enter Iran – an estimated 140 metric tons a year of it. Only about 23 percent of it is seized each year, or 32 mt. Most of the remainder enters Turkey and then travels through the Balkans on its way to Europe. As of 2008, half of the world’s seizures of heroin occurred in either Turkey or Iran.