VATICAN CITY, VATICAN - JANUARY 09:  Pope Francis (C) poses with accredited ambassadors to the Holy See at the Sistine Chapel 'Cappella Sistina' on January 9, 2017 in Vatican City, Vatican. As the Holy Father was giving his annual address to the Diplomatic Corps accredited to the Holy See he said:  'Peace is a gift, challenge, and commitment'. (Photo by Vatican Pool/Getty Images)