The widespread move towards more market-driven models of political economy combined with the expanding internationalisation of business and commerce has led to a series of proposals for global competition rules. To date these proposals have been hotly contested. The purpose of this book is to investigate in some depth whether there is a rational foundation for pursuing international competition rules, and what form these laws should take. The book takes examples from existing competition laws around the world, in particular the US and the EU both of which have a long history of enforcing established competition rules.