There is no reliable evidence that tougher criminal sanctions deter drug use or offending. On the contrary, criminalisation worsens the health and wellbeing of drug users, increases risk behaviours, drives the spread of HIV, encourages other crime and discourages drug users from seeking treatment. A report by Australia21, Alternatives to Prohibition, subtitled Illicit drugs: how we can stop killing and criminalising young Australians, sets out the lessons learnt about the failed war on drugs from other countries, especially Sweden, Switzerland, the Netherlands and Portugal.
Cannabis is the cutting-edge drug for reform, the only politically plausible candidate for major legal change, at least decriminalisation (removal of criminal penalties for possession) and perhaps even outright legalisation (permitting production and sale). Compared with other drugs, the harms, physiological or behavioural, are less severe and the drug is better integrated into the culture. Throughout Western Europe and in the Antipodes there is pressure for reductions in the punitiveness of the marijuana regime.