The number of Orthodox Christians in the Holy Land is estimated at about 500,000. A majority of Church members are Palestinians and Jordanians, and there are also many Russians, Romanians, and Georgians. The Church's hierarchy is dominated by Greek clergy, which in effect excludes the Arab majority from the Church's upper ranks. This has been a point of endless contention between Greeks in the patriarchate, who are backed in this regard by the Greek government, Israel and the Turkey-based Ecumenical Patriarch of Constantinople, and the native Palestinian clergy- some of whom seek to nationalize the Church's leadership. (see Arab Orthodox).