No there are 7 ecumenical councils acknowledged by ALL. The other two coucils were synods of Bishops and were not universal because the Church was/is split.
Not so. There's no doubt about it, there were nine Ecumenical Councils. I've just been discussing this so have been immersed in the argument.
The Church has stated that the council of 879 is the 8th Ecumenical Council.
Certainly up until 1848, when the patriarchates who took part in the original 8th mention it as the 8th in their Encyclical in response to Rome's claims. In 1848 there was no dispute about this from the Orthodox Patriarchates which were there at the time, Constantinople, Alexandria, Antioch and Jerusalem mention it casually as a well known fact. It was official in 879 and it continues to be officially the Orthodox 8th Ecumenical Council.
Up until 100 years or so ago EVERYONE knew that this is where the RCC and the Orthodox parted company, the argument at the Schism was about WHICH 8th was Ecumenical, not "was there an 8th?". The Eighth council didn't happen after the split, but before.
Ecumenical Councils are by definition Imperial, of the ecumene of the Roman Empire. They were all called officially by an Emperor/Empress beginning with Constantine who wanted a unified theory of Christianity for his Empire. There can be no more "Ecumenical Councils", there can be Councils which are ecumenical.
"...Nine Roman Ecumenical Councils. These Councils were convened by the Roman Emperor, beginning with Constantine the Great, in coordination with the Roman Patriarchates of Elder Rome, New Rome, Alexandria, Antioch and finally Jerusalem by 451. These Councils are (1) Nicea 325, (2) Constantinople 381, (3) Ephesus 431, (4) Chalcedon 451, (5) Constantinople 553, (6) Constantinople 680, (7) Nicea 786/7, ( Constantinople 879 and (9) Constantinople 1341. We have here Eight Ecumenical Councils which were promulgated as Roman Law by the signature of the Emperor after their minutes had been signed by the Five Roman Patriarchates and their Metropolitans. and bishops. Then we have the Ninth Ecumenical Council of 1341, whose minutes were signed by only Four Roman Patriarchates and countersigned by the Roman Emperor." Romanides
P.S. I've been thinking some more about this:
I think this emphasis on the 7 Councils is also to do with the fact that the iconoclast arguments were still around, and for a few centuries more very strong.
Photios insisted, at the 8th Ecumenical, that the 7th be confirmed as Orthodox, these arguments defending Orthodoxy (including Rome) began to be under this banner - we are the Church of the 7 councils not the 6 - hence the Triumph of Orthodoxy. So "the 7 councils" has nothing to do with being a proof that the 8th didn't happen, it's a different argument.
Myrrh