Proportionality and armed conflict

The very astute Catholic commentator and Vatican observer Sandro Magister has some thoughts, in his recent column, about possible shifts -- consistent with Deus caritas est -- in the Holy See's approach to diplomacy.  And, he excerpts from a recent piece on "proportionality" by Pietro De Marco, an expert in religious geopolitics, a professor at the University of Florence and at the Theological Faculty of Central Italy, and an editorialist for Avvenire, the paper of the Italian bishops' conference.