The 1920s to 1950s was a period of significant transformation and conflict in South and East Asia, marked by the forces of (anti-)imperialism, nationalism, and militarism, eventually escalating into the Second Sino-Japanese War and the Second World War. For a long time, internationalist initiatives hoped that de-escalation and peace could be achieved through diplomacy and exchange. Part of this approach included Asian Christians moving in the milieu of Protestant internationalism, a movement long dominated by American organizations and actors, which after the First World War saw a shift towards Asia—both in terms of representation from and interest in the region.
Between the 1920s and the 1950s, numerous international conferences, organized by missionary associations and organizations such as the World Student Christian Federation or the international Young Men’s Christian Association, debated the political future of Asia in a changing and increasingly belligerent world. The period also witnessed numerous exchanges of Christian delegations between individual countries. By analysing the interrelated histories of three Asian Protestant internationalists—T. Z. Koo of China, Kagawa Toyohiko of Japan, and Augustine Ralla Ram of India—the article offers an examination of the mechanics of Christian diplomacy before, during, and after war. It shows that Protestant internationalist diplomacy, fellowship, and solidarity were often overshadowed by national and political ideologies. However, the article further argues that, despite its shortcomings, which challenged transnational solidarity and fellowship, Christian diplomacy was characterized by a resilience and reach that allowed its Asian protagonists a remarkable international operating space by providing useful networks, opportunities, and resources.