"The Disintegration of Ukraine. The South-Eastern Republic" is a book that examines the difficult and painful topic of the division of Ukraine for many. The author frankly and in detail talks about the political, economic and socio-cultural reasons that led to the appearance of a new state on the world map. The book examines not only the chronology of events, but also the psychological state of society, its division into supporters of division and defenders of harmony. The author analyzes the reaction of the international community to the new political situation in the region, taking into account the historical narratives that influenced the formation of such a dramatic event. "The Decay of Ukraine. The South-Eastern Republic" is not only a look into the past, but also an attempt to analyze current events and predict possible consequences for the future. This book will interest those who are interested in politics, sociology and modern history of Ukraine.