As the Cold War came to a close in 1991, US President George H. W. Bush famously saw its shocking demise as the dawn of a 'new world order' that would prize peace and expand liberal democratic capitalism. Thirty years later, with China on the rise, Russia resurgent, and populism roiling the Western world, it is clear that Bush's declaration remains elusive. In this book, leading scholars of international affairs offer fresh insight into why the hopes of the early post-Cold War period have been dashed and the challenges ahead. As the world marks the thirtieth anniversary of the collapse of the Soviet Union, this book brings together historians and political scientists to examine the changes and continuities in world politics that emerged at the end of the Cold War and shaped the world we inhabit today.