In this article the authors examine the development of modern international law in terms of the discourse on fragmentation, and set the following goals: 1) determine the phenomenon of “fragmentation” and systematize the reasons for the emergence of discourse on fragmentation; 2) trace the evolution of scientific views upon fragmentation as a phenomenon; 3) considering the currently prevalent views upon the mechanism of development of international law, as well as prevention and settlement of conflicts of norms within international law, repeatedly assess some traditional examples of “fragmentation” as the logical processes or processes posing a threat to the integrity of international law. As the examples, the article analyzes such classical disputes as the Decision of the Appeals Chamber of the International Criminal Tribunal for the. Former Yugoslavia in the case of Dusko Tadic, as well as decision of the UN International Court on Application of the Convention on the Prevention and Punishment of the Crime of