This book provides an up-to-date, comprehensive overview of Eastern Christian churches in Europe, the Middle East, Africa, Asia, Australia and the US. Written by leading international scholars in the field, it examines both Eastern Orthodox and Oriental churches from the end of the Cold War until the present day. The book examines the religious revival after the fall of communism, changing relations between churches and the political realm, and then goes on to analyse the new challenges faced by Eastern Christian churches in the twenty-first century.