In some circumstances, ecumenical dialogue has been "a positive element in some cases of conflict and violence". It was said this morning by mgr. Brian Farrel, Secretary of the Papal Council for the Promotion of the Unity of Christians, as he spoke to the participants in the World Seminar of the Catholic Chaplains and Members of the Chantries of Civil Aviation, which is going on in Rome, promoted by the Papal Council of the Pastoral for Migrants and Itinerants. The bishop mentioned the case of Northern Ireland, where for many years Catholics and Protestants have been fighting against each other. Dialogue, "after a very difficult and slow start", in this condition led to a meeting between the members of the two parties, thus "giving a push to society, which led to develop a willingness of peace within the population and of overcoming the rationale of violence". Mgr. Farrel then mentioned the work of the World Council of the Churches with which the Catholic Church cooperates even if it is not a member that has been working since 2001 to "commit the Churches to an effort for practical cooperation in order to respond to concrete situations". Airports are "the mirror" of mankind, since they are "multicultural and multi-religious" places.