Executive Director of the United Nations Office on Drugs and Crime (UNODC) Vienna
6 December 2008
Dear Mr. Costa,
On 6 December 2007 at the Drug Policy Alliance Conference in New Orleans I asked you the following question:
“Why, after more than 30 years of regulated availability to adults over 18 years, is cannabis use in the Netherlands lower than in most European countries and the USA - and not higher, as would be expected if the prohibition of illicit drugs really was effective?
6 December 2008
Dear Mr. Costa,
On 6 December 2007 at the Drug Policy Alliance Conference in New Orleans I asked you the following question:
“Why, after more than 30 years of regulated availability to adults over 18 years, is cannabis use in the Netherlands lower than in most European countries and the USA - and not higher, as would be expected if the prohibition of illicit drugs really was effective?