In this illuminating history that spans past campaigns against piracy and slavery to contemporary campaigns against drug trafficking and transnational terrorism, Peter Andreas and Ethan Nadelmann explain how and why prohibitions and policing practices increasingly extend across borders. The internationalization of crime control is too often described as simply a natural and predictable response to the growth of transnational crime in an age of globalization. Andreas and Nadelmann challenge this conventional view as at best incomplete and at worst misleading.