Vatican, Lutheran officials call for joint study of Augsburg Confession
Pope praises Julian of Norwich as example of faith and service
United in prayer: Pope adds Coptic Orthodox martyrs to Catholic calendar
Synod vigil to be expression of 'ecumenism of solidarity,' pastor says
Arms trade is a 'plague,' pope says on flight back from Africa
Praying with South Sudan's Christians, leaders urge new steps toward unity
Pope Benedict's theological 'sparring partner' remembers 'enriching' debate