epa03631776 Rome's Chief Rabbi Riccardo Di Segni attending Pope Francis's inauguration mass at the St Peter's square, Vatican City, 19 March 2013. Pope Francis celebrated his inauguration mass before a multitude, as well as the president of his home country of Argentina and other world leaders. The 76-year-old was elected the 266th pontiff of the Catholic Church - the first from the Americas, following the surprise resignation last month of Pope Emeritus Benedict XVI. EPA/MAURIZIO BRAMBATTI