The 21st Century is marked by mass migration. Massive population movements of the last century have radically challenged our study and practice of "mission fields". Where the church once rallied to go out into "the regions beyond" Christian missions is currently required to respond and adapt to "missions around". This volume analyses the development of missions to the migrants and develops an understanding of the contemporary church's opportunities and responsibility vis-à- vis Diaspora Missiology: "a missiological framework for understanding and participating in God's redemptive mission among peoples living outside their places of origin".