Europe and the US have together dominated the world for over 200 years and have shaped the nature of the modern international order through their power and ideas. But they are losing their material primacy and ideological dominance with the rise of new powers, or the ‘rest’, such as China, India, Brazil, Russia and Turkey in the 21st century. The shift of global power from the West to the rest will transform International Relations (IR) and the emerging world order. Kupchan’s book explores the struggle over the world order and ideology that will ensue as the rising powers acquire new wealth, military power and influence. The author argues that the coming world will be a multipolar and politically diverse one. He believes that the rise of new powers will create a more equal distribution of global power. However, for the new world order to emerge peacefully, the author contends, both the West and the rising rest will not only have to agree on vital strategic issues but they have to build consensus on the governing rules that will define international peace and security.