Contents, Key words and Summaries. “Representative Power–Century 21” issue #3 – 2016 INTERRELIGIOUS DIALOGUE Speech by His Holiness Patriarch Kirill of Moscow and All Russia on January 29, 2016 at the Federation Council of the Federal Assembly of the Russian Federation. <...> Joint Declaration of Pope Francis and Patriarch Kirill (12.02.2016 G., Havana, Cuba) Kirill - His Holiness Patriarch of Moscow and all Russia. <...> Abstract: 29 January 2016 Patriarch of Moscow and all Russia Kirill spoke at the plenary session IV of the Christmas parliamentary meetings at the Federation Council of the Federal Assembly of the Russian Federation. <...> During his speech, Patriarch Kirill touched upon the most important human values, such as correlation of morality and law, the institution of family, moral and physical health of society and culture, from the point of view of traditional Orthodox morality. <...> Many of his talking points are subsequently reflected in the joint statement of Pope Francis and his Holiness Patriarch Kirill on 12 February 2016 in Havana, attached to this article. <...> Key words: Patriarch Kirill, tradition, innovation, moral values, international law, legislation, the Constitution of the Russian Federation, the institution of family, education, Pope Francis, joint Declaration, Havana, Cuba. <...> STATE AND LAW Oganesyan S.S. Civilizational mentality of ethnic groups and nations: ecological and legal problems Oganesyan S.S. - Senior staff scientist of the Federal Penitentiary Service research institute, PhD of pedagogics, professor, the first class state counsellor of the Russian Federation, the member of council of experts of the State Duma of the Russian Federation in charge of civil movements and religious establishments. <...> The proof is given to the fact that international legal acts are bound to take civilizational mentality of all the ethnic groups and nations into consideration in order to prevent extremist effects in relationship between people and nations as well as in the matter of ecological problems prevention – both anthropogenic and others. <...> Key words: Mental civilizations, paganism, monotheism, scientific self-government, environmental safety, anthropogenic disasters, man's impact on the environment, the strategic path of humanity development, the man-of-the family, the man-of-the state, the man-of-the planet, the extra-planetary man, the holy scriptures, the Kyoto Protocol, the international law Nudnenko L.A. The amendments to electoral legislation on the status of election observers <...>