I finished the "survey" last night. It wasn't quite as hard-hitting as I expected (it's based heavily on a recently issued reports which probably had more facts and figures - see the [link|http://www.economist.com/printedition/displayStory.cfm?Story_ID=708492|sources]), but it was a well-reasoned article.
They make the point that it's difficult for countries which have signed the UN convention on drugs to subsequently liberalize their policies, and give the example of a proposed law in Switzerland which will let people grow marijuana as long as they account for all the production and none is exported. It'll still be "illegal", but the offendors will have formal exemption from prosecution for it.
They push the Mill-ian view - a person has soverignty over themselves - and it makes sense. But they admit addiction and use will increase and don't really know what to do about that. They acknowledge addiction is a problem, but argue that the war on drugs has too high a cost. I think they make a pretty good case for a pragmatic approach, but expected a bit more. (Not that I could have done any better...)
Cheers,
Scott.