The Conclusion reviews the volume’s major themes. Russia and China have common interests that cement their partnership, and are key players in shaping the international order. Both seek better relations with the West, but on the basis of “mutual respect” and “equality.” While the relationship has grown deeper, particularly since 2014, China and Russia are partners but not allies. Thus, their relationship is marked by burgeoning cooperation, but still areas of potential competition and friction. Russia in particular must deal with China’s growing relative power at the same time that it is isolated from the West. While the Russian–Chinese relationship creates challenges for the United States and Europe and a return of major power rivalry, there is also room for cooperation in the strategic triangle comprising China, Russia, and the West. Looking ahead, the world is in a period of dramatic transition.