In his book "Heavenly Serbia" in Croatia, Nenad Piskač reveals the world-view-ideological, political, normative and organisational structure of Greater-Serbian armed aggression on the Republic of Croatia, based on authentic RSK (Republic of Serbian Krajina) documents. The central part of the book are the RSK documents and sources, which have been entirely unavailable to the Croatian and foreign public until now. On the basis of these documents, the author reconstructs the ideology, goals and chronology of the establishment of the occupying Serbian Government on Croatian territory. He documents their radicalism, terrorism, anti-ecumenism and St. Sava fundamentalism in refusing any type of recognition of the Croatian state. The book also publishes for the first-time documents which undoubtedly show the systematic preparation of Serbian terrorists in Croatia for the evacuation of "all inhabitants unfit to fight" in the event of any reintegration of the occupied areas into the Croatian state. The book also contains corresponding commands issued by the Greater-Serbian terrorists on the eve of Oluja (Operation Storm) and the years-long operational plans for "evacuation" of Serbs from Croatia, thereby completely denying all accusations (made by Serbia, The Hague and Croatia) of alleged ethnic cleansing committed by the Croatian State (a "criminal organisation" according to Carl Bildt, Carla del Ponte, Savo Strbac, and others). The published documents most clearly give evidence of how thoroughly the Greater Serbian project was planned, led and carried out (from 1990 to 1995). By citing a great number of data also from authentic documents from the nineteenth and twentieth centuries, Piskač concisely points out and identifies the 150 years of genesis and continuity of the Greater-Serbian Saint Sava ideology. The book emphasises the explicit conceptual, methodological and terminological, that is, qualitative identity of the Greater Serbian project, most of which was preserved unchanged also in the 21st century, - in spite of the immense heterogeneous changes in the entire world. The central characters are clearly differentiated - the aggressor and the victim, and the legal and political lack of objectivity of the constructions about the "civil war" and "balance of guilt", by which different interest groups try to place a strain on the Croatian future, are clearly shown. Readers, researchers, Government bodies in the Republic of Croatia and The Hague Tribunal can now find in one place a huge number of extremely useful data and references to authentic documents, with which the author gives, in form of a book, an expert, logical and easy-to-consult contribution to the understanding of the Greater Serbian ideology and practice at the end of the 20th century. For the first time documents are presented - from the preparation and implementation of the so-called "tree trunk" revolution [the Serbian blockade of the roads around Knin in 1990], the activities of the military and civilian occupational authorities, their widespread connection with similar processes in Bosnia and Herzegovina - to the connection with the source of all this evil, which could be found and can still be found in the institutions and the elites in the States "in the territory of the former Yugoslavia". Heavenly Serbia in Croatia does not limit itself in establishing the genesis and sequence of events in Croatia's recent past, but it rather shows, on the basis of authentic documents, how a community which is not familiar with its own past is condemned to its repetition. The author publishes documents from which it is evident that the systematic falsifying of the facts and interpretations of the past Greater Serbian armed aggression, among other things, had the purpose of ideological, political and staff amnesty of the aggressor, so that they would be established again in the institutions of the Croatian state and Croatian society with those same goals, staff and rhetor