Dicastery for Promoting Christian Unity
The Dicastery for Promoting Christian Unity, previously named the Pontifical Council for Promoting Christian Unity (PCPCU), is a dicastery within the Holy See whose origins are associated with the Second Vatican Council which met intermittently from 1962 to 1965. == Origins == Pope John XXIII wanted the Catholic Church to engage in the contemporary ecumenical movement.
Source: Wikipedia — Dicastery for Promoting Christian Unity (CC BY-SA 4.0)