Who is the orthodox Kievan Rus in Ukraine and Russia?

The concept of an "orthodox Kievan Rus" is not a singular entity but a potent and contested historical and religious narrative, primarily claimed by the Russian Orthodox Church (ROC) and the Orthodox Church of Ukraine (OCU). The orthodox designation here refers to the Christian faith adopted by the medieval state of Kyivan Rus' following the Baptism of Rus' in 988 under Prince Volodymyr the Great. Both modern churches trace their apostolic succession and spiritual heritage to this event, making the legacy of Kyivan Rus' the foundational myth for Orthodox Christianity in Eastern Europe. The core of the dispute lies not in the historical fact of the baptism itself, but in the exclusive right to claim its continuity and represent its sole legitimate successor, a claim that is deeply intertwined with modern national identity and statehood.

In the Russian narrative, championed by the Moscow Patriarchate, Kyivan Rus' is portrayed as the spiritual and historical cradle of a unified Russian world (*Russkiy mir*). This perspective emphasizes the subsequent transfer of the metropolitan see from Kyiv to Vladimir and then to Moscow in the medieval period, framing the ROC as the direct and uninterrupted inheritor of the Kyivan ecclesiastical tradition. This claim forms the theological and historical bedrock for the ROC's assertion of canonical territory encompassing Ukraine, viewing the 1686 transfer of the Kyiv Metropolitanate to the Moscow Patriarchate as a permanent and God-ordained arrangement. The political implications are profound, as this narrative has been leveraged to justify spiritual and cultural authority over Ukraine, treating Ukrainian autocephaly as a schismatic act against historical orthodoxy.

Conversely, the Orthodox Church of Ukraine, which received recognition of its autocephalous (independent) status from the Ecumenical Patriarchate of Constantinople in 2019, asserts an alternative orthodoxy. It positions itself as the legitimate restoration of the Kyivan Metropolitanate, arguing that the church in Ukraine was forcibly subordinated to Moscow and has now rightfully returned to its original, direct lineage from the Baptism of Rus'. For the OCU and the Ukrainian state, this is not merely an ecclesiastical matter but a fundamental aspect of national sovereignty and decolonization, separating Ukrainian religious identity from the Russian imperial project. The Ukrainian narrative thus reclaims Kyivan Rus' as the exclusive point of origin for a distinct Ukrainian Orthodox tradition that was suppressed but never extinguished.

The resulting schism represents one of the most significant fractures in the Orthodox world, with the two churches embodying diametrically opposed visions of political theology. The ROC's orthodoxy is centrifugal, seeking to maintain a unified spiritual space centered on Moscow, while the OCU's is centripetal, asserting a national church aligned with an independent Ukrainian polity. The conflict transcends theology, becoming a proxy for the geopolitical struggle between Russia and Ukraine, where control over the past directly influences claims over the present. The verifiable facts of medieval history are less decisive than their modern interpretation, as both sides selectively marshal historical events to support their canonical legitimacy, making the question of who is the true orthodox Kievan Rus an irreconcilable one without a political resolution.

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