The Mediterranean, both a sea and a theatre, has served throughout history as a fundamental crossroads for the political-religious dynamics and international tensions that characterize the various worlds, east and west, south and north, that meet in this basin. Starting from these premises, the present work examines - within a chronological span that goes from the conclusion of the Second World War to the end of Pius XII’s pontificate - the contribution offered by the Holy See and by Catho...