We should decriminalise the possession of drugs for personal use for the following simple reasons: (1) If users are addicted then they are ill, and criminal sanctions are an inappropriate way to deal with an illness; (2) If they are not addicted then criminalisation will almost always lead to greater harms to the user than the effects of the drug. For example, it can severely limit career options in public service and prevent travel to some countries particularly the USA.
The war on drugs creates massive costs, resulting from the enforcement-led approach that puts organised crime in control of the trade. It is time to count these costs and explore the alternatives.

Drug Law Reform in Latin America is a project of the TNI Drugs & Democracy programme
"Promoting a more effective and humane drug policy in Latin America"
In 2011 the 1961 UN Single Convention on drugs will be in place for 50 years. In 2012 the international drug control system will exist 100 years since the International Opium Convention was signed in 1912 in The Hague. Does it still serve its purpose or is a reform of the UN Drug Conventions needed? This site provides critical background.