This review article summarises the literature on the relations between states and their diaspora. Policy makers are struggling to know how best to respond to and possibly harness the potential of kindred communities abroad. The article outlines a wide spectrum of policy initiatives and categorises them into three groups: economic, political and socio-cultural. Five economic, four political and two social-cultural factors are discussed as are the wide variety of implementation strategy evident in different jurisdictions. Though the concentration is on Asia, examples are chosen worldwide. Academically, the article identifies empirical and conceptual deficiencies in studies on diaspora strategies.