Tom Decorte is a professor of criminology and the director of the Institute for Social Drug research (ISD) at Ghent University. He answers questions from Olivier Taymans (an active member of Liaison antiprohibitionniste and project manager at FEDITO BXL): what’s the ISD, and what are its missions? Why be in favour of a regulation of cannabis, and why would decriminalisation not be sufficient? Is the distinction between medicinal and recreational cannabis essential? And which foreign models could be an inspiration?