This book investigates whether Japan has transitioned from a reactive foreign policy stance to a proactive leadership role within the context of East Asian monetary regionalism. Shigeko Hayashi utilizes original fieldwork and interviews with Japanese officials to construct a framework that challenges the traditional view of Japan as a passive actor in international relations. By analyzing shifts in regional policy, the author argues that Japan’s diplomatic and economic strategies are increasingly calculated and incrementally effective rather than merely responsive to external pressures.

Experts recognize this work as a significant contribution to the study of Japanese foreign policy, particularly for its departure from the reactive-state model. Readers frequently note the academic density of the prose and the value of the primary interview data in understanding regional economic shifts.