The Colombian cartels have controlled the international cocaine trade since their formation more than 10 years ago. They supply more than 80 percent of the cocaine smuggled into the United States each year. The Medellin cartel's operations extend well beyond the production and transportation of cocaine. The political, social, and cultural activities the cartel undertakes extend its influence well beyond those directly involved in drug trafficking. In addition, the financial benefits of narcotics trafficking provide benefits to vast segments of Colombian society. Moreover, the Cali cartel has learned from the mistakes of the Medellin cartel and is even more effective at putting drugs on streets in the United States. Overall, the total failure of supply reduction programs indicates the strength of the drug cartels. 78 reference notes (Author abstract modified)