VATICAN CITY, VATICAN - MAY 16:  Pope Francis meets Palestinian President Mahmoud Abbas also known as Abu Mazen during an audience at the Apostolic Palace on May 16, 2015 in Vatican City, Vatican. The Vatican on Wednesday officially recognized the state of Palestine in a new treaty finalized just days before the Catholic Church is set to declare two 19th century Palestinian nuns as saints.  (Photo by Vatican Pool/Getty Images)