Your Summer Assignment: Restudy the Doctrine of the Church

This is what we read from today's Chiesa article by Sandro Magister:

This is what is prescribed by a new document from the [C]ongregation for the [D]octrine of the [F]aith. The Orthodox and Protestants are cautioned: the Catholic Church is the only one in which subsist the "essential constitutive elements" of the Church intended by Christ. Turbulence in view, in ecumenical dialogue.

As the link to the CDF's document has already been posted, what is missing is the Commentary which does appear on the Chiesa link below.

The Commentary (a necessary read for properly understanding the document) states, in part:

Precisely because some contemporary theological research has been erroneous, or ambiguous, the Congregation’s intention is to clarify the authentic meaning of certain ecclesiological statements of the Magisterium. For this reason the Congregation has chosen to use the literary genre of Responsa ad quaestiones, which of its nature does not attempt to advance arguments to prove a particular doctrine but rather, by limiting itself to the previous teachings of the Magisterium, sets out only to give a sure and certain response to specific questions.
. . .
This new document of the Congregation for the Doctrine of the Faith, which essentially summarises the teaching of the Council and the post-conciliar magisterium, constitutes a clear reaffirmation of Catholic doctrine on the Church. Apart from dealing with certain unacceptable ideas which have unfortunately spread around the Catholic world, it offers valuable indications for the future of ecumenical dialogue. This dialogue remains one of the priorities of the Catholic Church, as Benedict XVI confirmed in his first message to the Church on April 20, 2005 and on many other occasions, especially during his apostolic visit to Turkey (28.11.06-1.12.06). However, if such dialogue is to be truly constructive it must involve not just the mutual openness of the participants but also fidelity to the identity of the Catholic faith. Only in this way will it be able to lead towards the unity of all Christians in “one flock with one shepherd” (Jn 10, 16) and thus heal that wound which prevents the Catholic Church from fully realising her universality within history.