I'm encouraged to see that this thorough resource on diaspora missiology--in part the fruit of the Lausanne Global Diaspora Network gathering Manila last year-- has just been released. Here is a brief description from the publisher which also includes a helpful explanation of what is meant by diaspora missiology:
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-àvis Diaspora Missiology: “a missiological framework for understanding and participating in God’s redemptive mission among peoples living outside their places of origin.”
Though I could not take part in the Manila gathering, I had the privilege to write chapter 29 of the book ("The Brazilian Evangelical Missions Movement") in which I summarized some of the key findings from my book Brazilian Evangelical Missions in the Arab World, which was published in 2012. Certainly, a key element of grasping diaspora missiology is to recognize the significance of mission movements origination from all over the world.
I'm excited to see this volume available to students as we navigate the changing landscape of mission in the 21st century and the new approaches that are needed.