Reconstructing Strategic Legal Autonomy in Southeast Asia: International Law amid Great Power Competition

Main Article Content

Khoirunnisa Khoirunnisa
Didi Jubaidi

Abstract

This article aims to reconstruct the concept of strategic legal autonomy from the perspective of international law and formulate a normative framework applicable to Southeast Asian states amid intensifying great-power competition. The legal dimension of strategic autonomy remains insufficiently conceptualized because existing studies predominantly emphasize diplomatic flexibility, strategic hedging, and foreign-policy choices. This study employs normative/doctrinal legal research using conceptual, treaty-based, comparative, and case approaches. It examines international and regional legal instruments, selected judicial decisions, and scholarly literature concerning sovereignty, sovereign equality, international legal commitments, institutional participation, and strategic autonomy. The findings demonstrate that international law performs a dual function: it constrains state action through binding obligations while simultaneously providing legal rights, principles, procedures, and institutions that can preserve national and regional policy space. Accordingly, this article proposes a Strategic Legal Autonomy Framework comprising four interrelated dimensions: normative autonomy, regulatory autonomy, institutional autonomy, and strategic legal choice. These dimensions explain how Southeast Asian states can maintain meaningful legal agency despite asymmetric power relations and external pressures. The study concludes that strategic legal autonomy should not be understood as legal isolation, neutrality, or freedom from international obligations. Instead, it constitutes the capacity of Southeast Asian states to preserve their legal and policy choices while remaining actively engaged in international legal and institutional regimes. The proposed framework provides a legally grounded perspective for understanding how strategic autonomy can be maintained within, rather than outside, the international legal order.

Article Details

How to Cite
Khoirunnisa, K., & Jubaidi, D. (2026). Reconstructing Strategic Legal Autonomy in Southeast Asia: International Law amid Great Power Competition. Journal of International Studies on Energy Affairs, 7(1), 1–25. https://doi.org/10.51413/jisea.Vol7.Iss1.2026.1-25
Section
Articles

References

Aamer, F., & Chanlett-Avery, E. (2026). Seeking agency in uncertainty: Asian middle powers and the fragmenting global order. Asia Society Policy Institute. https://asiasociety.org/policy-institute/seeking-agency-uncertainty-asian-middle-powers-and-fragmenting-global-order

Arinal, A., & Naf, H. (2025). Identitas nasional dan politik luar negeri: Studi kasus diplomasi kebudayaan. Maliki Interdisciplinary Journal, 3, 1760–1764. https://urj.uin-malang.ac.id/index.php/mij/article/view/15963

ASEAN. (n.d.). Situation in the South China Sea. Retrieved September 3, 2026, from https://asean.org/our-communities/asean-political-security-community/peaceful-secure-and-stable-region/situation-in-the-south-china-sea/

ASEAN. (1976). Treaty of Amity and Cooperation in Southeast Asia. https://asean.org/our-communities/asean-political-security-community/outward-looking-community/treaty-of-amity-and-cooperation-in-southeast-asia-tac/

ASEAN. (2008). The ASEAN Charter. ASEAN Secretariat. https://asean.org/wp-content/uploads/images/archive/publications/ASEAN-Charter.pdf

ASEAN. (2019). ASEAN outlook on the Indo-Pacific. ASEAN Secretariat. https://asean.org/asean2020/wp-content/uploads/2021/01/ASEAN-Outlook-on-the-Indo-Pacific_FINAL_22062019.pdf

ASEAN. (2024). ASEAN leaders’ declaration on the ASEAN outlook on the Indo-Pacific for the future-ready ASEAN and ASEAN-centred regional architecture. https://asean.org/asean-leaders-declaration-on-the-asean-outlook-on-the-indo-pacific-for-the-future-ready-asean-and-asean-centred-regional-architecture/

Association of Southeast Asian Nations. (2025). ASEAN Community Vision 2045: Resilient, innovative, dynamic, and people-centred ASEAN. https://asean.org/asean-community-vision-2045-resilient-innovative-dynamic-and-people-centred-asean/

Farrand, B. (2025). The economy–security nexus: Risk, strategic autonomy and the regulation of the semiconductor supply chain. European Journal of Risk Regulation, 16(1), 279–293. https://doi.org/10.1017/err.2024.63

Hass, R. (2025). Pax Americana is over: What comes next and how will it impact Southeast Asia? ISEAS Perspective, 2025(83). ISEAS–Yusof Ishak Institute. https://www.iseas.edu.sg/articles-commentaries/iseas-perspective/2025-83-pax-americana-is-over-what-comes-next-and-how-will-it-impact-southeast-asia-by-ryan-hass/

Herlanda, M. D., & Wirawan, R. (2025). Geopolitical pressures and digital sovereignity: Indonesia’s strategic response to US–China data hegemony. Jurnal Hubungan Internasional, 18(2), 571–592. https://doi.org/10.20473/jhi.v18i2.76019

Hutchinson, T., & Duncan, N. (2012). Defining and describing what we do: Doctrinal legal research. Deakin Law Review, 17(1), 83–119. https://doi.org/10.21153/dlr2012vol17no1art70

Jubaidi, D., & Yustanti, D. E. (2025). Soft law strategy in the ASEAN Charter framework: A nonbinding legal approach to strengthening regional cooperation. China Quarterly of International Strategic Studies, 11(1), 39–57. https://doi.org/10.1142/S2377740025500034

Khoirunnisa, K., & Jubaidi, D. (2025). Between power and principle: A study of legal legitimacy under international law in the Iran–Israel–U.S. trilateral conflict. Global Insight Journal, 10(2), 1–20. https://doi.org/10.52447/gij.v10i2.8559

Khoirunnisa, K., & Jubaidi, D. (2026). Legal legitimacy and regional governance: Lessons from Indonesia–PNG diplomatic engagements. Jurnal Hubungan Internasional, 19(1), 20–39. https://doi.org/10.20473/jhi.v19i1.83193

Khoirunnisa, K., Subhan, A., Sigit, R. R., Santoso, P. Y., & Jubaidi, D. (2026). Neo-Gramscian perspectives on international communication: China’s hegemony and Indonesia’s counter-diplomacy in Southeast Asia. SOSIOHUMANIORA: Jurnal Ilmiah Ilmu Sosial dan Humaniora, 12(2), 335–348. https://doi.org/10.30738/sosio.v12i2.22127

Kristiyanto, H., Arinanto, S., & Ghafur, H. S. (2023). Institutionalization and party resilience in Indonesian electoral democracy. Heliyon, 9(12), Article e22919. https://doi.org/10.1016/j.heliyon.2023.e22919

Kübek, G., & Mancini, I. (2023). EU trade policy between constitutional openness and strategic autonomy. European Constitutional Law Review, 19(3), 518–547. https://doi.org/10.1017/S1574019623000226

Kuik, C.-C., Idris, N. A., & Md Nor, A. R. (2012). The China factor in the U.S. “reengagement” with Southeast Asia: Drivers and limits of converged hedging. Asian Politics & Policy, 4(3), 315–344. https://doi.org/10.1111/j.1943-0787.2012.01361.x

Lu, Q., & Moorthy, R. (2025). US–China digital infrastructure competition in Southeast Asia: Strategies and implications for ASEAN’s 5G future. Journal of International Studies, 21(2), 45–67. https://doi.org/10.32890/jis2025.21.2.3

Marston, H. S. (2024). Navigating great power competition: A neoclassical realist view of hedging. International Relations of the Asia-Pacific, 24(1), 29–63. https://doi.org/10.1093/irap/lcad001

Ong-Webb, G. (2026). Acting together and alone: Southeast Asia’s political and security landscape in 2025. In T. Chong & D. Singh (Eds.), Southeast Asian affairs 2026 (pp. 1–20). ISEAS–Yusof Ishak Institute. https://bookshop.iseas.edu.sg/publication/800

Permanent Court of Arbitration. (2016, July 12). The South China Sea arbitration (The Republic of the Philippines v. The People’s Republic of China), PCA Case No. 2013-19: Award. https://pca-cpa.org/en/cases/7/

Qiao-Franco, G., Karmazin, A., & Kolmaš, M. (2025). The Indo-Pacific and the next phase of ASEAN centrality. Journal of Current Southeast Asian Affairs, 44(3), 413–435. https://doi.org/10.1177/18681034241307658

Republic of Indonesia. (2025, June 24). Statement by the delegation of the Republic of Indonesia at the 35th Meeting of States Parties to the United Nations Convention on the Law of the Sea. United Nations. https://estatements.un.org/estatements/61.0130/20250624100000000/nNaFrsBU/hAIxvlhN-EV_nyc_en.pdf

Singgir, N. Y., Ferriswara, D., Pramudiana, I. D., & Kamariyah, S. (2025). Policy implementation in Indonesia: A systematic review of recent trends and practices in public administration and governance. Kajian Administrasi Publik dan Ilmu Komunikasi, 2(3), 120–148. https://doi.org/10.62383/kajian.v2i3.574

Steinbach, A. (2023). The EU’s turn to “strategic autonomy”: Leeway for policy action and points of conflict. European Journal of International Law, 34(4), 973–1006. https://doi.org/10.1093/ejil/chad048

Tan, E. R. L., & Lye, L. F. (2025). Assessing China’s call for “strategic autonomy” in Southeast Asia: Origins, objectives and outcomes. ISEAS Perspective, 2025(22), 1–14. ISEAS–Yusof Ishak Institute. https://www.iseas.edu.sg/articles-commentaries/iseas-perspective/2025-22-assessing-chinas-call-for-strategic-autonomy-in-southeast-asia-origins-objectives-and-outcomes-by-eugene-r-l-tan-lye-liang-fook/

Tan, H.-L. (2024). Legal agency of small states: Regional law cooperation amid Indo-Pacific pressures. Michigan Journal of International Law, 45(2), 185–228. https://doi.org/10.36642/mjil.45.2.legal

Tiwary, R. M., & Acharya, A. (2026). China’s negotiated power in South Asia: A Global South political economy analysis. China Report, 62(2), 139–161. https://doi.org/10.1177/00094455261447674

United Nations. (1945). Charter of the United Nations and Statute of the International Court of Justice. https://treaties.un.org/doc/publication/ctc/uncharter.pdf

United Nations. (1969). Vienna Convention on the Law of Treaties. United Nations Treaty Series, 1155, 331. https://treaties.un.org/doc/Publication/UNTS/Volume%201155/volume-1155-I-18232-English.pdf

United Nations. (1982). United Nations Convention on the Law of the Sea. United Nations Treaty Series, 1833, 397. https://www.un.org/depts/los/convention_agreements/texts/unclos/unclos_e.pdf

Voon, T. (2022). Multilateral rules on trade in goods: Exceptions and regulatory autonomy [Preprint]. SSRN. https://doi.org/10.2139/ssrn.4274671

Wajahat, J., Jan, M., & Ali, R. N. (2025). International law and sovereignty: Between legal obligation and political will. Advance Social Science Archive Journal, 4(1), 1145–1156. https://doi.org/10.55966/assaj.2025.4.1.071

Yeo, A. (2025). Supply chains and Southeast Asia: The Sino-American shadow. Survival, 67(4), 113–126. https://doi.org/10.1080/00396338.2025.2534289

Zhang, J. (2023). Rebuilding strategic autonomy: ASEAN’s response to US–China strategic competition. China International Strategy Review, 5(1), 73–89. https://doi.org/10.1007/s42533-023-00128-3