The development of international relations, the processes of globalization in the world require the application of the norms of international law and foreign law in the law enforcement processes in different countries, including the courts. In this regard, a number of practical problems arise in the emergence and resolution of various conflicts of national and international importance in the framework of the application of international law and foreign law. According to national court statistics, in the last three years, economic courts have applied international law only in the recognition and enforcement of foreign court and international arbitration decisions, and in cases complicated by a foreign element, the application of foreign law in only two cases. These indicators show that these issues are not sufficiently addressed in the context of national legislation and case law, and are relevant in the study.