Book excerpt: Understanding of the theories that underpin international political economy (IPE), and their practical applications, is crucial to the study of international relations, politics, development and economics. This is a comprehensive and accessible introduction to the field, with an engaging and coherent foundation to the subject. It considers traditional and alternative approaches to IPE, and in doing so elucidates key concepts, assumptions and the intellectual and historical context in which they arose and developed. At all times, it makes clear their relevance to issues from trade, finance and government, to environment, technology, health, labour, security, migration, development and culture. The book encourages independent reflection and critical thinking through a range of in-text guiding features. In addition, each chapter presents theoretical analysis alongside contemporary issues, helping the reader to relate to the real world of IPE and to better understand how theory helps inform interpretation of it. New to this edition: comprehensively updated to include key coverage of the post-2015 framework of the Sustainable Development Goals, the financial crisis and international government responses - successful or otherwise - to recent challenges; fully updated data, reflective questions, recommended readings, concept and example boxes, and illustrations; new chapters on health, migration and labour; additional coverage of trade theories and key contemporary issues, such as national versus human security, economic versus human development and illegal networks in global trade.