Pope Leo XIV and Ecumenical Patriarch Bartholomew I, the spiritual leader of the world’s Eastern Orthodox Christians leave after a doxology service at the Patriarchal Church of Saint George, in Istanbul, Turkey, Saturday, Nov. 29, 2025. Photo: AP/UNB

A woman shows her t-shirt as she arrives for a Mass led by Pope Leo XIV at the Volkswagen Arena venue, in Istanbul, Turkey, Saturday, Nov. 29, 2025. Photo: AP/UNB

Orthodox clerics wait for Pope Leo XIV to arrive for a doxology service at the Patriarchal Church of Saint George, in Istanbul, Turkey, Saturday, Nov. 29, 2025. Photo: AP/UNB

People attend a Mass celebrated by Pope Leo XIV at the Volkswagen Arena, in Istanbul, Turkey, Saturday, Nov. 29, 2025. Photo: AP/UNB

Pope Leo XIV celebrates a Mass at the Volkswagen Arena, in Istanbul, Turkey, Saturday, Nov. 29, 2025. Photo: AP/UNB