How the Orthodox view the problem of "conceptions of unity and models of union"

This article presents the Orthodox position on the question of "conceptions of unity and models of union," as it was developed within the framework of the work of the Faith and Order Commission of the World Council of Churches. Written as a collective theological contribution, the text analyzes a working document preparatory to the 1975 WCC Assembly. The central idea is that the unity of the Church, for the Orthodox, is an ontological reality, given by God and preserved without interruption in holy Tradition, the sacraments, and the apostolic ministry. The article identifies the crux of the ecumenical disagreement: the impossibility for other confessions of accepting the identification of the one Church with the Orthodox Church. It also proposes methodological clarifications on conciliarity, legitimate pluralism, and the distinction between essential elements and variable historical forms of ecclesial life.