Over the last two decades, the Taliban have moved from simply taxing Afghanistan's opium farmers to controlling every link in the chain of the world's biggest heroin supply. In Afghanistan's Opium Nation, we took you through the history of Afghanistan's opium and heroin industry up until the American invasion in 2001. In this episode, we recap the last 20 years of failed efforts to curtail the country's drug trade, detailing how US allies ramped up their growing and trafficking efforts just as the Taliban were doing the same.

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