This book explores the tensions within Cambodia’s foreign policy between a tight alignment with China, on one hand, and Cambodia’s commitment to ASEAN as well as its delicate foreign policy diversification towards other major powers, on the other hand. It traces the long history of Cambodia’s quest for survival from its bigger and historically antagonistic neighbours – the Thai and the Vietnamese – and its struggle for security and independence from the two neighbours and external major powers, particularly the United States and China. It discusses Cambodia’s geopolitical predicaments deriving from its location of being sandwiched by powerful neighbours and limited strategic options available for the Kingdom. The book also assesses recent developments in Cambodia’s relations with its neighbours and their implications for Cambodia’s increasingly tight alignment with China in recent years. It considers the extent to which the ruling regime in Cambodia depends on strong relations with China for its legitimacy and survival and argues that there are risks and danger for Cambodia in moving toward an increasingly tight alignment with China.