<div><p><em>The milestones of the activity of the Ukrainian editorial office of Vatican Radio during its 80-year history are considered in the article. The reasons for the creation of the Ukrainian editorial office, the peculiarities of its work under the pressure of Soviet propaganda during the Cold War are analyzed. It was found that the broadcast of the Ukrainian editorial office of Vatican Radio was intended to help the faithful preserve unity with the church in the conditions of the destruction of the UGCC and the total onset of militant atheism. It was demonstrated that the work of the Ukrainian editorial office of Vatican radio was still aimed at defending the truth, although it was much easier to conduct evangelization in the conditions of confrontation between the USSR and the West. Rapid information and communication development of society has allowed everyone to speak publicly. At the same time, it made it possible to manipulate public opinion and to disseminate disinformation instantly and in the end contributed to the emergence of a post-truth phenomenon that not only replaced traditional propaganda but also made it part of it. The appeal to the foundations of the Christian being in a changing world distinguishes programs of the Ukrainian editorial office from materials of other broadcasters, the main focus of which is on socio-political events.</em> <em>The reform of the information system implemented by the Vatican has shown that there has been a shift from preaching in the conditions of aggressive propaganda during the confrontation between the two systems to counteracting post-truth, which destroys the objective perception of the world. It is shown that the main task of the editorial office is to unite Ukrainians around Christian values, to preserve and promote the key principles of human existence in the conditions of spreading populism, disinformation, secularization, and relativism of modern society. In its programs, the Ukrainian editorial office of Vatican Radio encourages the audience to cultivate faith, to rely on Christian values and beliefs, emphasizing its unchanging purpose of serving God, people, and the church.</em></p></div><p><strong><em>Key words: </em></strong><em>the Ukrainian editorial office of Vatican Radio, Vatican News, Ukrainian Greek Catholic Church, post-truth, Christian values.</em></p>