The quarterly Internationale Kirchliche Zeitschrift (International Church Review) was first published in 1893. It is the only academic organ of the Old Catholic Churches of the Union of Utrecht. As such, it is the leading resource for articles on developments in Old Catholic theology and the findings of academic research into Old Catholicism. The IKZ also reports on the perception of Old Catholic ecumenical relations, which have traditionally been closest with the Eastern Orthodox Church and the Anglican Communion.
The “Kirchliche Chronik” (Church Chronicle) contains the official statements of the International Old Catholic Bishops’ Conference and important decisions of the local Old Catholic churches. It also covers important ecumenical events from around the world.
In addition, the IKZ reports on the regular International Old Catholic Congresses, the International Old Catholic Theologians’ Conference, and Anglican/Old Catholic consultations.