How can we better understand global issues? And what does it mean to do international relations theory today?Concepts in International Relations offers a fresh and accessible introduction to IR theory through the lens of the key concepts that shape our world – power, security, race, gender, the environment, and more. Unlike traditional textbooks, this book treats concepts not just as tools but as the very foundation of international thinking and practice.Concepts don’t just describe the world – they make it. Politicians, scholars and activists all use them to frame debates, justify actions and imagine alternatives. By interpreting and reimagining these concepts, theory becomes a powerful way to engage with global politics.This book is the essential companion for undergraduate and postgraduate students approaching IR or IR theory for the first time.