International Relations is a dynamic discipline, evolving in response to contemporary world politics.An Introduction to International Relations offers a foundational explanation of the theories, systems, actors and events that shape external relations between nations in today's global society.This edition retains the existing structure, grouping chapters on theories, international history and the 'traditional' and 'new' agendas, while acknowledging that these exist alongside one another and intersect in complex ways.The text has been comprehensively updated and includes new chapters on postcolonialism, the international politics of cyberspace, global public health and the futures of International Relations.New postcard boxes and case studies present contemporary examples of international relations in action, and discussion questions at the end of every chapter promote student engagement.Written by an author team of leading academics from Australia, New Zealand and around the world, An Introduction to International Relations remains a fundamental guide for students of international relations.