The monograph is a comprehensive study of approaches adopted by the Russian doctrineçof international law regarding the 2013-2015 events which are directly or indirectly connectedçwith international legal relations between Ukraine and the Russian Federation - the Revolutionçof Dignity in Ukraine, the use of force by Russia in Crimea, the annexation of the peninsula,çand the armed conflict in parts of the Donetsk and Luhansk regions. The monographçoffers an analysis of the key arguments produced to justify the "lawfulness" of Russia's actionsçand expose "violations of international law by Ukraine" and evaluates the conclusions drawnçby Russian researchers from the standpoint of international legal norms and principles, theçpractice of their application, and modern approaches in global international law. The authorçidentifies the changes that took place in the Russian doctrine on the main issues in internationalçlegal regulation of relations between states under the influence of the 2013-2015 eventsçand summarizes the special features of contemporary doctrinal approaches and the main tendenciesçof their transformation.ç