re: #81 sagehen

Don’t the Russian Orthodox Church and the Church in Rome hate each other? For, like, the last 1500 years or so?

They have always had doctrinal differences.

That said, the Second Vatican Council warmed relations between Orthodox Churches and the Catholic Church.

In 1965 Pope Paul VI and Ecumenical Patriarch Athenagoras I of Constantinople mutually lifted their respective excommunications.

Since then, there have been several ecumenical conferences between the Catholic Church and Orthodox Churches. The biggest issue between them is the Orthodox Churches believe the Bishop of Rome is only a position of honour, whereas the Catholic Church has a different opinion on that.