Abstract: the purpose of this work is to study the international legal documents related to the definition of the term terrorism. Method: historical and legal analysis, deductive and inductive methods. The article deals with topical issues related to the definition of terrorism in international law. So the authors pay special attention to the international legal norms stipulated in: the Convention on the Prevention of Terrorism and Punishment for it (1934), the Geneva Convention on the Suppression of Terrorism (1937), the Convention on the Suppression of Terrorism (1972), the Convention on Prevention and Punishment of Crimes against Internationally Protected Persons, including diplomatic agents (1973) and others. The authors come to the conclusion that in international law today there is no common concept of terrorism, which creates certain difficulties in the implementation of the norms of international law in the internal national state of modern states.
Keywords: international law; international criminal law; terrorism; responsibility; terrorist activity