The war on drugs has failed, yet the government is considering reclassifying cannabis as a class B drug and reintroducing tougher penalties. This knee-jerk response is driven by an ill-informed moral panic that won't protect young people. Perhaps it is time we considered Dutch-style decriminalisation and coffee houses? Dr Evan Harris MP, Liberal Democrat science spokesperson, and Sebastian Saville, Executive Director of the drug agency Release, debate the pros and cons of cannabis law. 20.08.07