Acknowledgements
The authors are grateful for financial support to the Robert Schuman Centre for Advanced Studies, (RSCAS), the Religio West Project, and the European Research Council (ERC grant agreement no 269860). They would also like to thank the following individuals for providing helpful comments and feedback on specific articles in this special issue: Grigor Boykov, Cecilie Endresen, Hayri Emin, Leyla Amzi-Edogdular, Erdem Damar, Andreja Mesaric and Enis Sulstarova.