The present volume, based on a related conference in Erfurt, offers interdisciplinary insights on the Holy and Great Council of the Orthodox Church or the Pan-Orthodox Council, convened on the island of Crete in June 2016. Although some Orthodox Churches finally declined to participate – the most prominent being the Russian one –, the Council was a most significant development. It brought a considerable number of Orthodox Churches together and discussed crucial issues pertaining to today’s Orthodox world. However, it also vividly revealed existing serious problems of inter-Orthodox communication and collaboration. The contributions in this volume shed light on main issues related to this Council and their multiple repercussions for Pan-Orthodox unity and the future of the Orthodox world.