Pope Francis, center, flanked by Polish President Andrzej Duda, right, and his wife, Agata Kornhauser-Duda, arrives for an official welcoming ceremony at the royal Wawel Castle in Krakow, Poland, Wednesday, July 27, 2016. The world is at war, but it is not a war of religions, Pope Francis said Wednesday as he traveled to Poland on his first visit to Central and Eastern Europe in the shadow of the slaying of a priest in France. (Filippo Monteforte/Pool Photo via AP)