Today's issue of Reason Online carries an article by Reason Magazine's senior editor Brian Doherty addressing the current one-hundredth anniversary of the prohibition of opium. In the article available at http://www.reason.com/news.show/132034.html he concludes saying:
"One might think that the first place a reasonable politician would look to save a billion or so bucks a year is the category of efforts clearly marked “utterly ridiculous and proven completely futile”—such as the international drug war. But that will almost certainly not happen. If anything should make one hopeless about the future of sensible governance, it's the ongoing, apparently never-ending international war on drugs."
The full article is well worth reading.