This book is concerned with the design and conduct of macroeconomic policy in an international context. It addresses the advantages and disadvantages of simple policy rules, how to formulate policy in the face of uncertainty, the possible benefits from international policy coordination and the role that credibility plays in determining the effectiveness of government intervention. These issues are brought together to produce a unique, unified approach to the subject. The book will be of interest to students and teachers of macroeconomics, and professional economists concerned with the design of policy using macroeconomic models.