Here's an MP3 of Misha Glenny debating drug policy with Michael Hartmann. The event was organized by the London School of Economics and held on January 18th.
I enjoyed this podcast. It's about an hour and a half long, which is longer than my attention span so I listened to it in a couple of segments.
Hartmann is "manager and senior adviser of the Criminal Justice Programme at the United Nations Office on Drugs and Crime." His background as a criminal prosecutor certainly helped him during this debate. He articulated his argument well. If you think you might find yourself debating a prohibitionist one day, in a formal setting, it would be worth listening to Hartmann to find out what your opponent might say.
Glenny is a well respected British journalist and the author of McMafia. In an op-ed he once stated that, "In the United States, the most effective group demanding change is Law Enforcement Against Prohibition, or LEAP, which is made up of current and former police officers, including erstwhile operatives of the Drug Enforcement Agency."
Together these two men offer a high level, international perspective on the drug policy debate.