After the end of the Cold War many scholars thought that other states would balance against the United States since it now lacked a rival superpower to check it, and with the apparent abuse of its power epitomized by the invasion of Iraq in 2003 these expectations were heightened. In parallel, many observers thought that China’s rise would call up a local counter-balancing coalition. These predictions did not come true, leading scholars to wonder whether balance of power theory was obsolete—or even wrong. T.V. Paul shined a new light on this question with his seminal article, “Soft Balancing in the Age of U.S. Primacy,” in 2005. Since then, the concept of “soft balancing” has become a staple of the literature, with multiple applications and critiques. To this Paul has now added a full volume that pushes the argument further.