Document Type : Article


1 Assistant Prof., Department of Law, University of Tehran, Kish International Campus, Kish, Iran

2 Ph.D. Student in International Law, University of Tehran, Kish International Campus, Kish, Iran


The concept of jus cogens entered into international law through the law of treaties and today has become one of the most important and effective rules of international law. The principal and recognized function of the jus cogens is to invalidate any treaty which is in conflict with it. Some States resort to unilateral acts to achieve their goals and to avoid the limitations imposed by the  jus cogens, because given the lacuna in international law, they consider those acts to be outside the influence of the jus cogens. In recent years, we have seen the functional development of the jus cogens in areas other than the law of treaties. This article, examines the function of jus cogens in the field of unilateral acts of States, to determine if unilateral acts of States, where they conflict with a peremptory norm, produce any legal consequences, and if the jus cogens has any impact on such acts, is its function in the field of unilateral acts similar to that of the law of treaties or does it has a different function.


1. فارسی
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ج) پایان‌نامه
6. غریب‌آبادی، کاظم، (1396)، تحریم‌های یک‌جانبه و حقوق بین‌الملل، رساله دکتری پردیس خودگردان دانشگاه علامه طباطبایی.
2. انگلیسی
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B) Articles
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C) International Ducuments and decisions
24. Report of the International Law Commission on the work of its forty-eighth session, UN Doc. A/51/10, 1996.
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35. Case Concerning Legal Status of Eastern Greenland, PCIJ, (Series AB), Judgment of 1933.
36. Case Concerning the Arbitral Award Made By The King Of Spain on 23 December 1906 (Honduras v. Nicaragua), ICJ, Reports 1960.
37. Cases Concerning North Sea Continental Shelf, (Federal Republic of Germanyi/Denmark and the Netherlands), ICJ, Reports 1969.
38. Case Concerning Nuclear test (Australia v. France), ICJ, Reports 1974.
39. Case Concerning The Frontier Dispute (Burkina Faso/Republic of Mali), ICJ Reports 1986.
40. Case Concerning East Timor (Portugal v. Australia), ICJ, Reports 1995.
41. Case Concerning Armed Activities on the Territory of the Congo (DRC v. Rwanda), Jurisdiction of the Court and Admissibility of the Application, ICJ, Reports 2006.
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43. Separate Opinion of Judge Cancado Trindade attached to the Case Conserning Legal Consequences of the Separation of the Chagos Archipelago From Mauritius in 1965, ICJ, Reports 2019.
D) Thesis
44. Gharib Abadi, Kazem (2016), “Unilateral Sanctions and International Law, Ph.D Thesis, Allameh Tabatabai University Campus (In Persian).