A painting of Pope Benedict XVI is displayed as the head of Spain's Catholic Church and President of the Bishops' Conference Cardinal Antonio Maria Rouco Varela (2nd L) addresses a news conference in Madrid February 11, 2013. Pope Benedict shocked the world on Monday by saying he no longer had the mental and physical strength to cope with his ministry, in an announcement that left his aides "incredulous" and will make him the first pontiff to step down since the Middle Ages. REUTERS/Susana Vera (SPAIN - Tags: RELIGION POLITICS)