For centuries, coca has been used as a medicine in the Andes to relieve hunger, fatigue and sickness. Many Bolivians chew the small green leaf or drink it in tea on a daily basis. Much of the coca produced in Bolivia goes to this legal, controlled use. But the leaf is also a key ingredient in cocaine. The U.S. government has focused on coca eradication as a way to stem the flow of cocaine to the U.S. This war on drugs in Bolivia has resulted in violence, death, torture and trauma for the poor farmers who grow coca to survive. The U.S. government has directly funded this war, often facilitating human-rights violations and acting as a roadblock to peace in Bolivia. And the billions of dollars that Washington has pumped into this conflict have not diminished the amount of cocaine on the streets in the U.S.