Competition policy is at a crossroads on both sides of the Atlantic. In this insightful book, judges, enforcers and academics in law and economics look at the consensus built so far and clarify controversies surrounding the issue. There is broad consensus on the fight against cartels, with some countries criminalizing this type of agreement. However there is also wide debate on the questions of monopolization and abuse of dominant position, vividly highlighted by the recent Microsoft case. Furthermore, there are today diverging views on the interplay of business strategies and the control of market power on both a national and international scale. The book discusses the perennial issue in Europe of the conflicts between competition and industrial policies, once again bringing the theme of national champions to the fore. The contributing authors provide opinion on the efforts which have been made towards modernization in both the USA and the EU. Featuring new contributions by leading scholars and practitioners in antitrust, this book will be a great resource for antitrust enforcers, competition lawyers and practitioners and competition economists, as well as scholars and graduate students in antitrust and competition law.