On February 25, speaking at an extended session of the Presidential Council for inther-ethnic relations held by Tatarstan President Rustam Minnikhanov, Deputy Chief of Staff of Tatarstan President’s Administrative Office - Head of the Department for domestic policy Alexander Terentyev said that all the programme documents adopted in Tatarstan, contributing to the preservation of interethnic and interreligious harmony, are aimed at preserving languages and cultures of the peoples living in Tatarstan and ensuring inter-ethnic and inter-religious peace and concord, harmonization of interethnic relations.