'Despite very good scholarship on various aspects of the US-Korea alliance, we do not have a good single-volume account that covers the entire history. Uk Heo and Terrence Roehrig fill this gap. They also show how the rapid growth and democratization of junior partners both expands the possibilities for cooperation and opens up recurrent conflicts. Needless to say, timely and relevant.' Stephan Haggard, University of California, San Diego 'The Republic of Korea is one of only a few countries to have both a military alliance and a free trade agreement with the United States, but it faces mounting challenges in both areas. Offering a concise yet comprehensive analysis of the alliance, this book is a must-read for those who wish to better understand its increasing complexity.' Gi-Wook Shin, Stanford University, California 'This comprehensive and up-to-date assessment of the 65-year-old US-ROK security alliance will serve as a concise and handy reference for those who hope to keep the alliance on track or want to understand the impact of the alliance on South Korea's security, foreign policy, and economic development.' Scott Snyder, Council on Foreign Relations 'Heo and Roehrig have provided an important and timely addition to the literature on alliances in general and about U.S. - Korea relations in particular.' David C. Kang, H-Diplo 'The book is well done and those with an interest in Northeast Asia will be well served to buy it.' Mason Richey, H-Diplo 'The authors provide readers with an excellent understanding of the U.S. - South Korean alliance, drawing extensively on the secondary literature and some primary documents and reports from both English and Korean sources.' Andrew Yeo, H-Diplo