International Crisis Group (See in Wikipedia) published  two interesting report. Latin American Drugs I: Losing the Fight.Latin America Report N°25, 14 March 2008 . Coca leaf and cocaine production in the Andean region appear to have set new records in 2007. Cocaine trafficking and use are expanding across the Americas and Europe. Despite the expenditure of great effort and resources, the counter-drug policies of the U.S., the European Union (EU) and its member states and Latin American governments have proved ineffective and, in part, counterproductive, severely jeopardising democracy and stability in Latin America. See Executive summary. Full report as PDF file.  See also, Latin American Drugs II: Improving Policy and Reducing Harm.Latin America Report N°26. 14 March 2008. See Executive summary. Full report as PDF file .Watch video about ICG