The U.S. government is making ... Few realize that the Ecumenical Patriarchate of Constantinople is deeply ... they officially lift the mutual excommunications placed by their predecessors in 1054.

If the Russian Orthodox Church does end up fully schisming from Constantinople, it would represent the most significant break in the Eastern Church since 1054 AD.

The Synod of Russian Orthodox Church made the decision to completely break off the relations with Ecumenical Patriarchate of Constantinople in response to it's process of granting autocephaly, or ...

In 1453, this Ottoman sultan ended Christian rule in Constantinople. ... The 10-day celebration the government organized to mark 500 years of Turkish Istanbul was equally secular and Western.

The delegation submitted to the Minister of Interior adetailed statement of the difficult situation in which the Jewish Kehillah of Constantinople finds itself and asked the Government’s assistance.

When the Catholic and Orthodox churches split (the date is usually given as 1054, but the schism was a protracted affair), the Patriarch of Constantinople, then the capital of the Byzantine Empire, ...

On October 15, Moscow cut ties with Constantinople, severing the world’s largest Orthodox church from its historic home. Russia accounts for roughly half of Orthodoxy’s 300 million believers ...

So there was always a danger of miscommunication. And in 1054 itself, there was friction between the papal delegate, Cardinal Humbert, and the patriarch of Constantinople.

The Catholic and Orthodox churches split in 1054. In the Holy Land this week, the pope and Orthodox leaders will meet to try to start restoring unity. But not everyone is eager for reconciliation.