In light of the recent violence at a Syrian Catholic Church in Baghdad, John L Allen Jr proposes a new thesis:
The last decade has witnessed a historic shift from Judaism to Islam as the paradigmatic interfaith relationship of the Catholic Church.
That's not to say Judaism has become unimportant, or that Catholics won't continue to work on the relationship. Islam, however, has become the primary interfaith concern. Not only is Islam where the bulk of the church's time and treasure is being invested, it's the new template for all of Catholicism's relationships with other religions.