What is power in medieval Rus'? What is its nature? What kind of person can rule and what are his functions in relation to his subjects? Why does a particular ruler have the right to rule over a specific territory? The answers to these and many other questions are contained in the book by historian Vasily Telitsyn, dedicated to the ideology of the Moscow principality of the 14th – early 16th centuries. Based on numerous sources, the author explores the evolution of ideas about power in Rus', as well as the medieval concept representing the Russian land as the fatherland of the Moscow princes. For historians, cultural scientists, political scientists and everyone interested in the history of the Fatherland.