One of the council's lasting legacies is the Nicene Creed, a profession of faith still recited by Christians of all big ...

Jean-Arnault Dérens, historian and editor-in-chief of Le Courrier des Balkans, has just published Geopolitics of Orthodoxy: ...

“The importance of Ut unum sint is that it builds on the Second Vatican Council’s decree on ecumenism, Unitatis redintegratio ...

Istanbul, formerly Constantinople, is a Greek name, too, deriving from the Greek phrase "Is tin poli," meaning "to the city." ...

The efforts to resolve the dispute within the Malankara Church have received a boost with three Oriental Orthodox Churches ...

EASTERN ORTHODOX CHURCHES. There are many parallels between the beliefs ... Eastern Orthodoxy evolved into several independent exarchates and patriarchies, with the patriarch of Constantinople as ...

At the headquarters of the Ecumenical Patriarchate in Istanbul, Orthodox clergy and faithful welcomed the May 8 election of Pope Leo XIV, hoping he would build on the ecumenical progress made by his ...

Constantinople fell, and Emperor Constantine XI’s sacrifice marked the end of an era and a legacy of faith and defiance.

Pope Leo I tangled with Attila the Hun and won. Pope Leo III crowned Charlemagne as the first Holy Roman Emperor. This is the ...

Pope Leo XIV is willing to host peace talks between Moscow and Kyiv, yet Russia's stance towards the Vatican is likely to ...

This raucous meeting, which took place exactly 1700 years ago, was one of the most important in Christian history.