Pope Francis talks with, from left, the President of Panama Juan Carlos Varela, his wife Lorena Castillo de Varela, the President of Poland Andrzej Duda and his wife Agata Kornhauser Duda at the end of a Holy Mass celebrated in Brzegi, near Krakow, Poland, Sunday, July 31, 2016. During the mass the pontiff announced that Panama will be the host city of the next World Youth Day (L'Osservatore Romano/Pool Photo via AP)