On July 9, 2020 died Dr. Hab. (History), professor of Moscow State University (Lomonosov) Nina Alexandrovna Khachaturyan. Nina Denisova (by marriage Khachaturian) was born on October 7, 1931 in an intellectual Moscow family and in 1950 she entered the entered the Faculty of History of Moscow State University. For specialization, she chose the Department of History of the Middle Ages. Her first academic advisor was Nina Aleksandrovna Sidorova, who for many years was engaged in medieval urban culture. Among the teachers of N.A. Khachaturyan was also the head of the department, academician Sergei Danilovich Skazkin. Nina Alexandrovna began working at the Faculty of History of Moscow State University in 1963. The sphere of her scientific interests was the political history of the Middle Ages, primarily of France. In her Ph.D. (1968) and doctoral thesis (1988), as well as in numerous monographs and articles, she developed different subjects related to the history of the evolution of the state, considering it as one of the engines of the development of medieval society. In particular, she was interested in the main institutions of royal power and the mechanisms by which she ruled the country. In 1992 N.A. Khachaturian created and headed the research group "Power and Society". Nina Aleksandrovna also did a lot for the Department of History of the Middle Ages, she worked as its the deputy head for many years. Honored Professor of Moscow State University (2006), N.A. Khachaturian brought up many students, sought to teach them to think and defend their position.