This article analyses Christian Democratic International organisations after the Second World War, namely the Nouvelles Equipes Internationales (NEI) and the Geneva Circles (secret discussion groups), in order to understand how and to what extent this international network has been important for European Christian Democratic Parties and for the overall process of European unification. The goal is to describe the relationship between the Christian-inspired parties and their efforts to define a common ideological framework and a successful Europeanism capable of competing with other political groups and ideologies, especially communist and nationalist forces. The main sources used are the minutes of meetings of the NEI and the Geneva Circles.