1. Massive public education program on the effects of drug use, particularly the negative effects on health, self-control/real freedom and responsibility. (Prevent sellers from having the excuse that they didn't know how bad the product is, they're just meeting the demands of the market. In actuality they are taking advantage of human weakness and exploiting others in order to make a living.)
2. Increase of economic opportunities that will provide a decent alternative to selling drugs.
3. After the first two steps have been taken and some time has passed--the introduction of harsher penalties, including possibly the death penalty for those at the top of the pyramid?