Christian Reus-Smit is Professor of International Relations at the University of Queensland and a Fellow of the Academy of the Social Sciences in Australia. Among his previous books, he is the author of On Cultural Diversity (Cambridge University Press, 2018), Individual Rights and the Making of the International System (Cambridge University Press, 2013), American Power and World Order (Polity Press, 2004), and The Moral Purpose of the State (Princeton University Press, 1999).

International relations affects everyone's lives: their security, economic well-being, rights and freedoms, and the environment they share. Recently we have seen the transformation from a world of empires to today's world of sovereign states, which are enmeshed in a complex array of international institutions, all exercising degrees of political authority. The new global organization of political authority has far-reaching consequences.
This Very Short Introduction untangles this complex world, providing an accessible framework for understanding the contours of global political change. Christian Reus-Smit treats theory as an indispensable tool for grasping international relations, but demystifies theorizing, introducing it as an everyday human practice. He surveys a range of theories, from realism to feminism: reading them as contrasting perspectives on the global organization of political authority. Historically, such organization has been shaped by diverse social forces, four of which are discussed in detail: shifting patterns of warfare, changing economic conditions, struggles for rights, and the politics of culture. Reus-Smit concludes with a reflection on the future of international relations in an era of profound global change.
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