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State Consent and Sovereign Equality in International Law: A Critical Analysis

*Nesli Tamba  -  Doctor of Law Program, Faculty of Law, Universitas Diponegoro, Indonesia
Yusriyadi Yusriyadi scopus  -  Faculty of Law, Universitas Diponegoro, Indonesia
Nur Rochaeti orcid scopus  -  Faculty of Law, Universitas Diponegoro, Indonesia
John Roberto Sampe orcid scopus  -  Faculty of Law, University of New South Wales, Australia

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Abstract

The doctrine of state consent is a foundational pillar of the modern international legal order. This article critically evaluates the claim that consent functions as the primary basis of international law by tracing its operation in three principal areas: treaty law, international adjudication, and customary international law. It argues that the consent model is neither absolute nor applied in a uniform manner. Although the principle of sovereign equality under Article 2(1) of the UN Charter supports a voluntarist framework, a range of more flexible consent mechanisms such as treaty reservations and informal commitments enable states to shape the scope of their obligations. Even though jurisdiction before the International Court of Justice (ICJ) is strictly anchored in consent, the “persistent objector” doctrine, controversies about the legitimacy of customary norms, and power imbalances within state practice expose underlying tensions in how consent is processed. The article further shows that states are not automatically bound by particular treaties or conventions; signing, for example, does not amount to a declaration of submission or a binding undertaking to an international convention or declaration. The conclusion is that, although state consent is indispensable, it operates within a contested normative framework formed as much by power disparities and geopolitical interests as by legal principles. This tension indicates that while state consent rests on the sovereign equality of states, power asymmetries can prevent that equality from being fully achieved in practice.

Keywords: State Consent; Sovereign Equality; Customary International Law; Treaty Law; Persistent Objector Doctrine

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Article Info
Section: Conceptual Article
Language : EN
  1. Álvarez, J. R. G. (2024). A Melting Snowball—Difficulties Identifying Particular Customary International Law. International & Comparative Law Quarterly, 73(4), 1083-1092. https://doi.org/10.1017/S002058932 4000320
  2. Arvante, J. Z. Y., Sulistyawan, A. Y., & Riyanto, Y. P. (2025). The Role of Legal Theory in the Era of Digital Globalization: A Perspective of Law Theory as a Tool of Social Engineering. Jurnal Pembangunan Hukum Indonesia,7(2),307-324. https://doi.org/10.14710/jphi.v7i2.128-145
  3. Ayu, S. M., Shaluhiyah, Z., Widjanarko, B., & Purwanti, A. (2026). Rasch Analysis of the General Life Skills Scale for Dating Violence Prevention in Indonesian Adolescents. Media Publikasi Promosi Kesehatan Indonesia, 9(2), 262-273. https://doi.org/10.56338/mppki.v9i2.8555
  4. Barnsley, I. (2006). Dealing with change: Australia, Canada and the Kyoto Protocol to the Framework Convention on climate change. The Round Table, 95(385), 399–410. https://doi.org/10.1080/00358530600748358
  5. Bhardwaj, C., & Mehrotra, A. (2022). Crawford, TWAIL, and Sovereign Equality of States: Similarity and Differences. Australian Year Book of International Law, 40(1), 89-114. https://doi.org/10.1163/26660229-04001006
  6. Birath, S. (2024). How Africa Shapes International Law: ECOWAS’s Use of Force and Jus ad Bellum. Harvard International Law Journal, 65(2),527–558. https://journals.law.harvard.edu/ilj/2024/09/how-africa-shapes-international-law-ecowass-use-of-force-and-jus-ad-bellum/
  7. Chimni, B. S. (2022). The international law of jurisdiction: A TWAIL perspective. Leiden Journal of International Law, 35(1), 29–54. https://doi.org/10.1017/S0922156521000534
  8. Comstock, A. L. (2024). Signing CEDAW and Women’s Rights: Human Rights Treaty Signature and Legal Mobilization. Law and Social Inquiry, 49(2), 1222-1255. https://doi.org/10.1017/lsi.2023.24
  9. d’Aspremont, J. (2024). The Demanding Idea of Consent to International Law. Saint Louis University Law Journal, 68(2), 349-366. https://scholarship.law.slu.edu/lj/vol68/iss2/7/
  10. Derler, R. O. F. (2026). General Principles of Law and the Persistent Objector Rule: A Theoretical and Practical Incompatibility. International and Comparative Law Quarterly, 75(2), 405–441. https://doi.org/ 10.1017/S0020589326101602
  11. Elsig, M., & Milewicz, K. (2017). The politics of treaty signature: The role of diplomats and ties that bind. International Negotiation, 22(3), 521–543. https://doi.org/10.1163/15 718069-12341361
  12. Hamid, A. G. (2022). The principle that the land dominates the sea in the context of South China Sea disputes: A critical appraisal. IIUM Law Journal, 30(2), 49–75. https://doi.org/10.31436/iiumlj.v30i2.742
  13. Handayani, E., & Hardiyanti, M. (2025). Forging a legal culture: criminal law enforcement in environmental protection amidst the sustainable development era. Clio. Revista de Historia, Ciencias Humanas y Pensamiento Critico., 5(10), 249-281. https://doi.org/10.5281/zenodo.14975866
  14. Hasibuan, A. H. H., & Tahe, N. (2026). Law and Regulatory Certainty: An Analysis of Its Impact on the Investment Climate and Business Governance in Indonesia. Jurnal Pembangunan Hukum Indonesia, 8(2), 204-222. https://doi.org/10.14710/jphi.v8i2.204-222
  15. Johnston, K. A. (2021). The nature and context of rules and the identification of customary international law. European Journal of International Law, 32(4), 1167–1190. https://doi.org/10.1093/ejil/chab089
  16. Kamalludin, I., Purwanti, A., Sularto, R. B., Berezniak, V., & Liudvik, V. (2025). Designing a Digital Trust Fund for the Justice for Sexual Violence Victims Based on Islamic Criminal Law. Jurnal Hukum Islam,23(2),459-500. https://doi.org/10.28918/jhi.v23i2.04
  17. Kristianto, A. M., Suteki, & Geofrey, M. J. C. (2025). Analyzing Bankruptcy Cancellation Through The Principle of Justice: A Case Study of Intidana Cooperative. Indonesia Private Law Review, 6(1), 43-56. https://doi.org/10.25041/iplr.v6i1.4196
  18. Lando, M. F. (2023). The Limits of Deduction in the Identification of Customary International Law. Asian Journal of International Law, 14(2),268–292. https://doi.org/10.1017/S2044251323000401
  19. Latifiani, D., Yusriadi, Y., Sarono, A., Al Fikry, A. H., & Cholis, M. N. (2022). Reconstruction Of E-court Legal Culture In Civil Law Enforcement. Journal of Indonesian Legal Studies,7(2),413. https://doi.org/10.15294/jils.v7i2.59993
  20. Leung, H. (2024). The Extended Continental Shelf in Nicaragua v Colombia: Identifying a Customary Rule Based on CLCS Submissions?. Ocean Development & International Law, 55(1–2), 206–233. https://doi.org/10.1080/00908320.2024.2366865
  21. Mahfud, M. A., Siregar, D. M. A., & Malik, M. F. (2026). Nussbaum’s Justice Theory Lens: the Digital Divide and Unfulfillment of the Right to Public Service in Traditional Society. Media Iuris, 9(1), 97-128. https://doi.org/10.20473/mi.v9i1.77214
  22. Mayaka, R. B., Rodriguez, S. R., Kamal, U., & Fikri, M. A. H. (2024a). A Normative Analysis on the Implementation of Carbon Capture and Storage in order to Achieve Net Zero Emissions in Indonesia. Unnes Law Journal, 10(1), 1-24. https://doi.org/10.15294/ulj.v10i1.4526
  23. Mayaka, R. B., Sulistiyono, T., Gusthomi, M. I., & Windiahsari, W. (2024b). Can the Erga Omnes Principle Revolutionize State Administrative Courts? A Challenge Through Lawrence M. Friedman’s Legal System Theory. Indonesian State Law Review,7(2),75-92. https://doi.org/10.15294/islrev.v7i2.18870
  24. McKibben, H. E., & Western, S. D. (2020). Reserved Ratification: An Analysis of States’ Entry of Reservations Upon Ratification of Human Rights Treaties. British Journal of Political Science, 50(2), 687–712. https://doi.org/10.1017/S000712 3417000631
  25. Mohanty, R. (2025). Need For Fairness In Climate Change Negotiations: A Third World Perspective. Asian Journal of International Law,15(1),157–189. https://doi.org/10.1017/S2044251324000183
  26. Mogollón, M. M. (2022). The consent-based problems surrounding the persistent objector doctrine. Michigan Journal of International Law, 43(2), 301–332. https://doi.org/10.36642/mjil.43.2.consent-based
  27. Nasution, A. V. A., Suteki, S., & Lumbanraja, A. D. (2025). Addressing Deepfake Pornography and the Right to be Forgotten in Indonesia: Legal Challenges in the Era of AI-Driven Sexual Abuse. International Journal for the Semiotics of Law, 38(7), 2489-2517. https://doi.org/10.1007/s11196-025-10265-0
  28. Natalis, A. (2026). Capitalism, Beauty Standards, and the Law: a feminist-foucauldian critique of body regulation. Journal of Philosophical Investigations,20(54),343-362. https://doi.org/10.22034/jpiut.2025.69150.4193
  29. Natalis, A., & Purwanti, A. (2025). Dissecting Masculinity: Transformative Strategies to Address Smoking in Indonesia. Iranian Journal of Public Health, 54(2), 434-444. https://doi.org/10.18502/ijph.v54i2.17915
  30. Nguyen, J. H., Truong, C., & Zhang, B. (2025). The price of carbon risk: Evidence from the Kyoto Protocol ratification. Journal of Environmental Economics and Management, 130. https://doi.org/10.1016/ j.jeem.2025.103118
  31. Ostermann, F., & Wagner, W. (2023). Introducing the International Treaty Ratification Votes Database. Foreign Policy Analysis, 19(4), 1-15. https://doi.org/10.1093/fpa/orad023
  32. Onderco, M., & Vignoli, V. (2024). Treaty legalization, security interests, and ratification of multilateral disarmament treaties. Conflict Management and Peace Science,42(3),223-244. https://doi.org/10.1177/07388942241243259
  33. Saparwadi, A., Priyono, F. J., & Setyowati, R. (2026). Determining Legal Status and Liability of Autonomous Artificial Intelligence System in Islamic Smart Contracts. Diponegoro Law Review, 11(1), 38-67. https://doi.org/10.14710/dilrev.11.1.2026.38-67
  34. Shabrina, S., & Putrijanti, A. (2022). Online Legal Counselling as Business Strategy: Exploring The Mediating Role of Notarial Code of Ethics. Corporate Law and Governance Review, 4(2), 69. https://doi. org/10.22495/clgrv4i2p8
  35. Pavel, C. E. (2026). The ethics of state consent to international law. Global Constitutionalism, 15(1), 85–110. https://doi.org/10.1017/ S2045381725100026
  36. Pirim, C. Z. (2022). The Legal Effects of the New Presidential System on Turkey’s Treaty-Making Practice. European Journal of International Law, 33(2), 579-606. https://doi.org/10.1093/ejil/chac032
  37. Tassinis, O. C. (2020). Customary international law: Interpretation from beginning to end. European Journal of International Law, 31(1),235–267. https://doi.org/10.1093/ejil/chaa026
  38. Vignoli, V., & Corradi, E. (2024). Trick or treaty? An empirical analysis of the treaty ratification process in Italy. Comparative European Politics, 22(4), 512–537. https://doi.org/10.1057/s41295-023-00370-4
  39. Walker, N. (2020). The sovereignty surplus. International Journal of Constitutional Law, 18(2),370–428. https://doi.org/10.1093/icon/moaa051
  40. Yeini, S. A. (2022). The persistent objector doctrine: Identifying contradictions. Chicago Journal of International Law, 22(2),581–620. https://chicagounbound.uchicago.edu/cjil/vol22/iss2/4/
  41. Okeke, E. C. (2018). Jurisdictional immunities of states and international organizations. Oxford: Oxford University Press. https://doi.org/10.1093/oso/9780190611231.001.0001
  42. Stein, T. L. (2017). The approach of the different drummer: The principle of the persistent objector in international law. In Sources of international law (pp. 331–356). Routledge. https://doi.org/10.4324/9781315087795-11⁠
  43. Strydom, H., Gevers, C., Juma, L., Kemp, G., Schlemmer, E., Scholtz, W., Viljoen, F., & Vrancken, P. (2020). The persistent objector rule. In Strydom, H., Gevers, C., Juma, L., Kemp, G., Schlemmer, E., Scholtz, W., Viljoen, F., & Vrancken, P. (Eds.), International law (2nd ed., Chap. 3), Cape Town: Oxford University Press Southern Africa
  44. Wood, M., & Sender, O. (2024). The persistent objector rule. In Wood, M. and Sender, O. (Eds.), Contesting the World: Identification of customary international law (Chap. 12), Oxford: Oxford University Press. https://doi.org/10.1093/law/9780198848226.003.0012
  45. United Nations. (1945). Charter of the United Nations and Statute of the International Court of Justice. San Francisco
  46. United Nations. (1969). Vienna Convention on the Law of Treaties. United Nations Treaty Series, vol. 1155
  47. Application of the Convention on the Prevention and Punishment of the Crime of Genocide (The Gambia v. Myanmar), ICJ, Order of 23 January 2020
  48. Armed Activities on the Territory of the Congo (Democratic Republic of Congo v. Rwanda), ICJ, Judgment of 3 February 2006
  49. Fisheries Case (United Kingdom v. Norway), ICJ, Judgment of 18 December 1951
  50. Bromund, T. R. (2018). Why the United States has not ratified the Arms Trade Treaty. Heritage Foundation Reports. Retrieved from https://www.heritage.org/global-politics/report/why-the-us-must-unsign-the-arms-trade-treaty-2018
  51. Landler, M. (2018). Trump abandons Iran nuclear deal he long called ‘defective’. The New York Times. Retrieved from https://www.nytimes.com/2018/05/08/world/middleeast/trump-iran-nuclear-deal.html
  52. Parliament of Australia. (2004). Kyoto Protocol and Australia’s response to climate change. Retrieved from https://www.aph.gov.au

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