Source: The Conversation by Alexander Titov The Moscow Patriarchate recently announced that it is breaking its ties with the Patriarchate of Constantinople, triggering what is potentially the biggest split in the Orthodox Church in a thousand years. So why is one of the great defenders of Christianity tearing itself apart? The tussle between Moscow and Constantinople is over Ukraine, and Constantinople’s declaration on October 15 that the Ukrainian church is no longer part of Moscow’s patrimony. And behind this is Ukraine’s divided national identity – and the woes of its current president. There have long been two main Ukrainian identities: Eastern Slavic (or Little Russian)…