2. The Council has already borne much fruit in the realm of missionary activity. There has been an increase of local churches with their own bishops, clergy and workers in the apostolate. The presence of Christian communities is more evident in the life of nations, and communion between the churches has led to a lively exchange of spiritual benefits and gifts. The commitment of the laity to the work of evangelization is changing ecclesial life, while particular churches are more willing to meet with the members of other Christian churches and other religions, and to enter into dialogue and cooperation with them. Above all, there is a new awareness that missionary activity is a matter for all Christians, for all dioceses and parishes, Church institutions and associations.
Nevertheless, in this "new springtime" of Christianity there is an undeniable negative tendency, and the present document is meant to help overcome it. Missionary activity specifically directed "to the nations" (ad gentes) appears to be waning, and this tendency is certainly not in line with the directives of the Council and of subsequent statements of the Magisterium. Difficulties both internal and external have weakened the Church's missionary thrust toward non-Christians, a fact which must arouse concern among all who believe in Christ. For in the Church's history, missionary drive has always been a sign of vitality, just as its lessening is a sign of a crisis of faith.
[Pope John Paul II, Redemptoris Missio]