The Ecclesiastical Scientific Center « Orthodox Encyclopaedia » just published the corpus of documents related to the 17th century reunification of the Kyiv Metropolis with the Russian Orthodox Church. The historical materials cover the period from 1678 to 1686. « The group of scholars, chaired by a correspondent of the Russian Academy of Sciences, has accomplished a colossal job. It should be all done late 2018 or early 2019. However, the events that