Heroin Smuggling into the US

"The smuggling of heroin into and within the United States was dominated by Italian organized criminal groups after the Second World War. Those groups purchased heroin and had it transported into the United States via Turkey and France. Later, major Chinese groups, known as “triads”, brought heroin via the territory of present-day Hong Kong, China, until Latin American heroin started to be trafficked into the United States in the mid-1990s, mainly by Colombian and Mexican groups. As heroin production in Colombia has declined in recent years, more of the heroin appears to be coming from Mexico."

Source: 

UN Office on Drugs and Crime, World Drug Report 2012 (United Nations publication, Sales No. E.12.XI.1), p. 84.
https://www.unodc.org/document...

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