Security relations between India and Japan hold great potential to shape the future security architecture of the Indo-Pacific region. This book delves into this aspect holistically tracing the linkages between the two countries with advent of Buddhism into Japan from India, through China and Korea. Geography and strategic factors shaping the security of Japan have been evaluated and issues of defence cooperation, maritime security, cooperation in UN Peace Keeping Operations and strategic partnership between Indian and Japan have been deliberated. Set in both, a bilateral as well as a regional context, the security dynamics between the two countries has been analysed to arrive at pragmatic recommendations that must be implemented for an enhanced relationship in the security realm. Quantitatively assessing the India Japan security cooperation, the book carries out a Strength, Weakness, Opportunity and Threat (SWOT) analysis to arrive at the strategies for enhancement of such cooperation.