As we move towards a world without superpowers, the dynamics within and between regions are of growing significance. Against this backdrop, this book explores the links between South Asia and the Gulf, which have existed for centuries but are undergoing important shifts in the transition to multipolarity. With a special focus on India, Pakistan, Iran, Bangladesh, Saudi Arabia, the United Arab Emirates, Sri Lanka and Oman, this volume brings together scholars from across these regions to investigate what the decentring world order means for the relationship between South Asia and the Gulf. It employs Regional Security Complex Theory to examine the changing global patterns of power and their impact on the inter-regional patterns of amity and enmity between states in South Asia and the Gulf. It employs both constructivist and realist approaches, seeking to understand how power and social processes influence the political and security linkages between these regions.