The study is aimed at considering theoretical and empirical issues of intercultural communication in Eastern Siberia at the end of the 20–21 centuries in ethno-confessional and geopolitical aspects. To achieve this research task the author has considered theoreticalmethodological and structural-functional aspects of intercultural communication in the ethnoconfessional space of the East-Siberian region. The methodological correlation of the processes of intercultural communication and integration intentions of state policy in the ideological sphere of public relations has been analyzed. Their targets in macro-social communication processes are socio-political stability and minimization of deviations based on ethnic and confessional affiliation through the implementation of organizational and legal forms of state functions. The conclusions have been made about actualization and basic nature of the anthropocultural approach, when considering the functional relationship of state power and state policy in the field of religious space. On the basis of the missionary intentions of the Roman Catholic and Russian Orthodox Churches, the object-subject and subjective parameters of the structure of legal communication have been determined, taking into account the geopolitical characteristics of state control over the unity of the sociocultural space. Interfaith communication problems between the Russian Orthodox Church and Roman Catholicism in Russia have worsened due to the proselytizing activities of the Roman Catholic Church in the East Siberian and Far Eastern regions and the lack of an elaborate regulatory framework enabling the government to control ideological space

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