No approach to world affairs in the 21st century can afford to ignore the impact that processes of globalisation are having on governments, economies, cultures, and individuals. An understanding of the theories that underpin International Political Economy, and their practical applications, is therefore crucial to the study of international relations, politics, development and economics. In this comprehensive and accessible introduction to the field, the authors consider traditional and alternative approaches to IPE, elucidating key concepts, assumptions and the intellectual and historical context in which they arose and developed -- making clear at all times their relevance to issues from trade finance and government, to environment, technology, development and culture. The style of this book encourages independent reflection and critical thinking. Each chapter relates theoretical analysis to contemporary issues, by way of giving the student a better understanding of the theory, and also demonstrating the value of theory in the real world.