The contributions in this book that provide theoretically guided description and explanation are grounded in a variety of social science disciplines: Glick Schiller in social anthropology, Waterbury in political science/comparative politics, Koinova in political science/international relations, King and Christou in cultural anthropology and Boccagni in sociology. Moreover, the contributions deal with social structures (Glick Schiller), large actors such as states and diaspora organisations (Waterbury and Koinova) and small groups (King & Christou and Boccagni).