In this photo from 2009, the Ecumenical Patriarch, Bartholomew I (left) and Russian Orthodox Patriarch Kirill stand side-by-side during a Sunday service in the Patriarchal Cathedral of St. George at the Ecumenical Orthodox Patriarchate in Istanbul, Turkey

In this photo from 2009, the Ecumenical Patriarch, Bartholomew I (left) and Russian Orthodox Patriarch Kirill stand side-by-side during a Sunday service in the Patriarchal Cathedral of St. George at the Ecumenical Orthodox Patriarchate in Istanbul, Turkey. Now, the branches of Orthodox Christianity that the two men represent are headed toward schism.

Credit:

Osman Orsal/Reuters

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