This book explores how the United States responds to eight of today's most pressing global hotspots: Russia, China, Israel-Palestine, Ukraine, Iran, North Korea, the Caribbean Basin, and the Sahel. Since World War II, the U.S. has held a central role in the international system--but its leadership is increasingly tested by rising tensions and conflicts around the world. Drawing on a clear framework of issues, interests, and actors, the authors examine how U.S. policies are shaped, the motivations behind them, and their impact on global stability. Essential reading for students and scholars of American foreign policy, international relations, and global politics, this book offers a compelling look at the evolving role of the United States and its influence on the future of international peace and security.