Title: Zwischen Konstantinopel und Moskau
Subjects: Constantinople (Ecumenical patriarchate), History, Orthodox Eastern Church, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ, Russkai︠a︡ pravoslavnai︠a︡ t︠s︡erkovʹ. Moskovskai︠a︡ patriarkhii︠a︡, Orthodox eastern church, history