This handout picture released by the Vatican press office shows Pope Francis and Pope Tawadros II, spiritual leader of Egypt's Orthodox Christians, on April 28, 2017 at St. Mark's Cathedral in Cairo during a two-day visit in Egypt. / AFP PHOTO / OSSERVATORE ROMANO AND AFP PHOTO / HO / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / OSSERVATORE ROMANO" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS