This volume identifies the main drivers of the current Sino—Russian relationship, assesses whether—and under what conditions—China and Russia would cooperate more extensively and effectively against American interests, and recommends U.S. policies that could prevent such an outcome.Most experts argue that economic interdependence, nuclear weapons, and the U.S. contribution to maintaining the global commons mean that China and Russia will generally accept U.S. military superiority and U.S. political supremacy in managing global affairs. An agreement between these two powerful countries to work against the United States, however, would greatly increase its vulnerabilities. Relations between the governments of China and Russia with the U.S. have worsened in past years. Identifying the various pathways, events, and political, economic, and military drivers that could shape the dynamics of the China—Russia relationship is of critical importance to U.S. security.This book examines the sources, nuances, and manifestations of the ongoing Sino—Russian relationship in order to recommend strategy and policy that could work to U.S. advantage. Written by an author who traveled extensively in both countries in order to conduct research and expert interviews for the work, the book covers the latest developments to include the major changes in Chinese foreign policy under President Xi Jinping and ongoing relations with Russian President Vladimir Putin.