Dutch Government admit that tolerate attitude toward lower-risk drug abuse could reduce criminality and protect drug addict's health. Some Dutch psychiatrists disagree and try to struggle against this so called "normalization" politic. Morphine legal consumption, per million inhabitants is higher in Netherlands than in France, showing a certain latitudinarianism of health profession. During last years, illicit traffic data indicate an extensive increase, but drug addicts statistics are no more trustworthy than in France. International Narcotics Control Board (UNO) disapprove of the non application of 1961 Narcotics Convention in Netherlands. Recently dutch authorities suggest french government to develop bilateral cooperation in drug prevention. In fact, Netherlands liberate cannabis consumption which brings, as in other countries an increasing of drug addiction Nevertheless, this liberalization is still recommended by there who ignore the international last century experiences. In a word, acting toward supply and not only towards demand is necessary for a correct prevention as WHO and UNO recommend it.