The Catholic Church and the Eastern Orthodox Church have been in a state of official schism from one another since the East–West Schism of 1054. This schism was caused by historical and linguistic developments, and the ensuing theological differences between the Western and Eastern churches.
Although the 20th century saw a growth of anti-western sentiments with the rise of neo-Palamism, "the future of East–West rapprochement appears to be overcoming the modern polemics of neo-scholasticism and neo-Palamism". Since the Second Vatican Council, the Catholic Church has generally taken the approach that the schism is primarily ecclesiological in nature, that the doctrinal teachings of the Eastern Orthodox churches are generally sound, and that "the vision of the full communion to be sought is that of unity in legitimate diversity" as before the division.
Solemn celebration of the Eucharist and affirmation of its sacrificial nature as identical with the sacrifice of Christ
The Eucharistic bread and wine becoming the body and blood of Jesus Christ
Neither Church community subscribes to the Protestant teachings expressed in the five solae, especially regarding the teachings of salvation through faith alone (which these two communities understand as requiring no acts of love and charity) or of sola Scriptura (which they understand as excluding doctrinal teachings passed down through the Church from the apostles in the form of sacred tradition).