What does the opiate supply chain look like and why focus on stockpiles only within Afghanistan?

In rough terms, the opiate (opium and heroin) supply chain emanating from Afghanistan is shaped like an hourglass. That is, there are many cultivators, farmers, and labourers, such as lancers (the workers who cut the seedpods of mature poppies and collect opium gum), involved in poppy cultivation and opium production and many retailers of heroin in end markets.

Sustainable Development Goals:

Good Health and Well-Being

Responsible Consumption and Production