Turkey even appears to have colluded with the Russian patriarch, Kirill, to limit the powers of the Greek Orthodox patriarch in Istanbul, Bartholomew I, usually seen as first among equals in the Orthodox hierarchy.

ECONOMIST: Turkey and Russia: Old rivals, new partners | The

In a letter to Kirill, the patriarch of the Russian Orthodox Church, Mr Yerofeev apologised for inadvertently hurting the feeling of believers, but blasted the church for siding with a group of anti-Semitic, militant radicals.

ECONOMIST: Church and state in Russia

The Russian Orthodox Church has apologised for showing a photo of its leader Patriarch Kirill that was doctored to airbrush out a luxury watch he was wearing.

BBC: Patriarch Kirill, 3 July 09 - screen grab