is an unparalleled compendium of ecumenical history, information and reflection. With essay contributions by nearly fifty experts in their various fields, and edited by two leading international scholars, the Handbook is a major resource for all who are involved or interested in ecumenical work for reconciliation between Christians and for the unity of the Church. Its six main sections consider, respectively, the different phases of the history of the ecumenical movement from the mid-nineteenth century to the present; the ways in which leading Christian churches and traditions, Orthodox, Anglican, Methodist, Catholic, Lutheran, Reformed, Baptist, and Pentecostal, have engaged with and contributed to the movement; the achievements of ecumenical dialogue in key areas of Christian doctrine, such as Christology and ecclesiology, baptism, Eucharist and ministry, morals and mission, and the issues that remain outstanding; various ecumenical agencies and instruments, such as covenants and dialogues, the World Council of Churches, the Pontifical Council for Promoting Christian Unity and the Global Christian Forum; the progress and difficulties of ecumenism in different countries, areas and continents of the world, the UK and the USA, Africa, Asia, South America, Europe, and the Middle East, ; and finally two all-important questions are considered by scholars from various traditions: what would Christian unity look like and what is the best method for seeking it? This is a remarkably comprehensive account and assessment of one of the most outstanding features of Christian history, namely the modern ecumenical movement.