When fighting the war on drugs, governments typically devote enormous resources trying to reduce the supply. But is this effective? Journalist and author Tom Wainwright of the Economist and author of Narconomics talks with EconTalk host Russ Roberts about the ways that the drug cartels respond to government attempts to reduce the availability of drugs. Like any business trying to maintain profitability, cartels look for ways to cut costs and maintain or grow revenue. Wainwright uses extensive on-the-ground interviews and reporting to understand the behavior of the cartels and argues that reducing demand would be a much more effective strategy for reducing drug use.