The purpose of the article is to analyze and summarize the dissertations and individual monographs of Ukrainian scholars of 1991–2024 on the international legal responsibility of States for the crime of aggression. Based on the study, the author identifies the following elements of this issue presented in Ukrainian complex studies 1) theory of international crime; 2) judicial mechanism of international legal responsibility; 3) individual criminal responsibility for international crimes; 4) essence and peculiarities of international legal responsibility of the state; 5) responsibility of states for internationally wrongful acts; 6) essence and peculiarities of the crime of aggression; 7) international legal responsibility of the Russian Federation for the crime of aggression against Ukraine. These elements have varying degrees of exploration and can be partially distinguished only together with related issues or even in the context of the latter. In addition, there is a clear time gap between Soviet and newer studies. Most of the available studies were written 15-20 years ago and are gradually losing their normative and doctrinal relevance with the development of international law and its science. And only a small number of them take into account the realities of the Russian Federation’s war against Ukraine and the current development of international law. The author concludes that the issues of international legal responsibility of States for the crime of aggression deserve to become a comprehensive topic of a complex dissertational and/or monographic study in Ukraine. 

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