The monograph is a comprehensive study of approaches adopted by the Russian doctrine¿¿of international law regarding the 2013-2015 events which are directly or indirectly connected¿¿with international legal relations between Ukraine and the Russian Federation - the Revolution¿¿of Dignity in Ukraine, the use of force by Russia in Crimea, the annexation of the peninsula,¿¿and the armed conflict in parts of the Donetsk and Luhansk regions. The monograph¿¿offers an analysis of the key arguments produced to justify the "lawfulness" of Russia's actions¿¿and expose "violations of international law by Ukraine" and evaluates the conclusions drawn¿¿by Russian researchers from the standpoint of international legal norms and principles, the¿¿practice of their application, and modern approaches in global international law. The author¿¿identifies the changes that took place in the Russian doctrine on the main issues in international¿¿legal regulation of relations between states under the influence of the 2013-2015 events¿¿and summarizes the special features of contemporary doctrinal approaches and the main tendencies¿¿of their transformation.¿¿