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By NICOLE WINFIELD, ANDREW WILKS and MEHMET GUZEL, Associated Press

IZNIK, Turkey (AP) — Pope Leo XIV joined Eastern and Western patriarchs and priests Friday in commemorating an important anniversary in Christian history, gathering at the site in Turkey of an unprecedented A.D. 325 meeting of bishops to pray that Christians might once again be united.

Show Caption 1 of 5 Pope Leo XIV meets the clergy at the Cathedral of the Holy Spirit, in Istanbul, Turkey, Friday, Nov. 28, 2025. (AP Photo/Domenico Stinellis) Expand

Leo, Ecumenical Patriarch Bartholomew I and other Christian leaders met on the shores of Lake Iznik, the site of the Council of Nicaea that produced a creed, or statement of faith, that is still recited by millions o

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