The methodology of interdisciplinary research and the science of international law

Introduction: interdisciplinarity comes in two forms: as a tool in relation to the subject of research and as a methodology of interdisciplinarity. The question of the need to develop a general theory of interdisciplinarity and the theoretical basis for its application in the science of international law is raised. Methods: historicism, system, analysis and comparative law. Results: an attempt to systematize the interdisciplinary methods and approaches, examples of interdisciplinarity in the development of new systemic and author’s approaches and terms within the framework of international legal studies. Conclusions: the essential connection between the issues of interdisciplinarity and the grounds of scientific novelty, which are important in terms of specific relationship between the theory of international law and its subject, is established.