This chapter examines the global order, led by the United States, that emerged at the end of the cold war and asks whether it has been effectively challenged by rising powers. It begins with a discussion of the challenges to the idea of a U.S.-dominated global order, focusing in particular on the role of large, emerging developing countries as well as the idea of the BRICS (Brazil, Russia, India, China, and South Africa) in the context of the future of the global economy. The chapter then considers the more recent economic slowdown in the emerging world, along with the political and social challenges facing many emerging societies. It also analyses some of the major theoretical arguments about the impact of rising powers on international relations and whether they are powerful enough to affect international order. The chapter also asks, what is the role of emerging powers in a post-Western order characterized both by US/China rivalry and by pressing global challenges such as climate change and the Covid-19 pandemic?