Laurent Cleenewerck suggests that the East-West schism could even be argued to have started with Victor's attempt to excommunicate the Asian churches. Despite Victor's failure to carry out his intent to excommunicate the Asian churches, many Catholic theologians point to this episode as evidence of papal primacy and authority in the early Church, citing the fact that none of the bishops challenged his right to excommunicate but rather questioned the wisdom and charity of doing so. From the Orthodox perspective, Victor had to relent in the end and we see that the Eastern Churches never grant him presidency over anything other than his own church, his own synod. Cleenewerck points out that Eusebius of Caesarea simply refers to Victor as one of the "rulers of the Churches", not the ruler of a yet unknown or unformed "universal Church". As the date of observance of the Resurrection of Christ as being on the day of the week Sunday rather than the 14th day of the month was not resolved by Papal authority it was only finally resolved by an Ecumenical Council.