Indonesia has long been regarded as ASEAN’s principal consensus-builder and normative anchor. Yet the persistence of major regional conflicts—most notably Myanmar’s post-coup crisis and escalating tensions in the South China Sea—raises questions about whether ASEAN unity functions as an effective instrument of conflict management or remains largely symbolic. This insight argues that Indonesia’s diplomacy reflects not simply structural constraints, but an observable shift from agenda-setting leadership to expectation management, a strategic drift that has significant implications for ASEAN’s capacity to manage regional conflict. While Indonesia’s role as system stabilizer has prevented institutional collapse, the recalibration of its diplomatic ambitions reveals deeper questions about whether ASEAN’s conflict-resolution architecture can adapt to contemporary threat environments. To move ASEAN from symbolic unity toward operational effectiveness, Indonesia must confront the strategic ceiling imposed by its own restraint culture and lead a fundamental recalibration, from unanimity as a rule to coordinated, differentiated action as a strategy.

ASEAN Unity under Strategic Strain

For decades, ASEAN unity has functioned as both a diplomatic principle and a political shield. [1] Consensus decision-making, non-interference, and informality have allowed Southeast Asian states to manage diversity, avoid open conflict, and preserve autonomy amid shifting global power dynamics. [2], [3] However, the regional environment confronting ASEAN today is markedly different from that of its formative decades. [1], [4] Internally, Myanmar’s post-coup political crisis has evolved into a prolonged civil conflict, generating humanitarian catastrophe, regional instability, and reputational damage for ASEAN. [5], [6] Externally, the South China Sea has become an arena of sustained strategic contestation, where maritime coercion, legal disputes, and great-power rivalry intersect. [2], [5], [7] Together, these crises test not only ASEAN’s diplomatic mechanisms but also the meaning and utility of ASEAN unity itself.

Indonesia, as ASEAN’s largest member and a founding advocate of regional autonomy, is widely expected to reconcile these tensions. [8], [9] Yet, despite initiatives during the 2023 ASEAN Chairmanship, both crises remain unsolved, highlighting a structural gap between diplomatic engagement and tangible outcomes. [1], [6] More critically, there is evidence of a quality shift in Indonesia’s diplomatic approach, which can be characterized as strategic drift under constraint. Recent analysis suggested that Indonesia’s regional optimism has visibly receded, with Jakarta increasingly focused on managing expectations rather than driving transformative outcomes. This recalibration matters because it signals not merely institutional frustration, but a fundamental reassessment of what ASEAN diplomacy can realistically achieve in the current geopolitical environment.

This persistent gap between diplomatic engagement and tangible outcomes raises a critical question: Why has Indonesia increasingly shifted from agenda-setting leadership to expectation management within ASEAN, and what are the implications of this shift for ASEAN’s capacity to manage conflict? Rather than framing Indonesia’s role in terms of success or failure, this insight argues that Indonesia’s diplomacy reflects a deeper structural tension—between unity as a normative ideal and unity as a practical instrument [8], [9], [10], compounded by an evolving strategic culture that may itself have become a ceiling rather than a foundation.

Indonesia’s Strategic Culture: Leadership without Alignment

Indonesia’s approach to regional diplomacy cannot be understood without reference to its enduring strategic culture. Since independence, the country’s foreign policy has been guided by the doctrine of bebas aktif—free and active diplomacy. This doctrine emphasizes autonomy, non-alignment, and proactive engagement, rejecting both passivity and rigid alliance politics. [9], [11] Significantly, this is not neutrality in the sense of moral indifference or political disengagement. Indonesia routinely takes normative positions on issues such as sovereignty, international law, and regional stability. [3], [7], [10] What it avoids is alignment that would subordinate regional interests to external power blocs.

Within ASEAN, this strategic culture positions Indonesia as a broker rather than a balancer, a coordinator rather than an enforcer. [1], [12] Indonesia’s leadership derives not from coercive capacity, but from legitimacy, size, diplomatic credibility, and its long-standing investment in ASEAN centrality. [9], [11]. These assets enable Indonesia to convene, mediate, and stabilize—but they also impose limits on how far Jakarta can push collective action without fracturing the organization. [6], [13]

However, recent research on Indonesia’s strategic culture introduced an important critical dimension. Indonesia’s deep aversion to escalation, its preference for autonomy over coalition leadership, and its discomfort with exclusionary strategies are not immutable national traits, but path-dependent choices shaped by historical experience. These traits have historically preserved Indonesia’s autonomy and enhanced its regional credibility. But in today’s environment—characterized by assertive great-power competition, norm erosion, and the weaponization of economic dependencies—over-extension of restraint may reduce influence rather than protect it.

This raises a conditional critique: Has Indonesia’s commitment to inclusive, non-coercive leadership become a strategic ceiling rather than a stabilizing asset? The question is not whether Indonesia should abandon its strategic culture, but whether selective recalibration has become necessary for institutional survival. Indonesia’s refusal to embrace coercion or exclusion remains principled, but the failure to distinguish between strategic restraint and strategic passivity may inadvertently enable actors who exploit ASEAN’s procedural norms without reciprocating its normative commitments.

The Myanmar Crisis: Managing Breakdown without Coercion and Leverage

Myanmar’s military coup in February 2021 confronted ASEAN with one of the most severe internal crises in its history. [14] Initial ASEAN responses reflected familiar patterns of constructive engagement, emphasizing dialogue and restraint. However, as violence escalated and political repression intensified, these traditional approaches proved insufficient. Indonesia played a central role in pushing ASEAN toward a more active—though still non-coercive response. [10] The Five-Point Consensus adopted in April 2021 marked a significant normative shift. [6], [15] While lacking enforcement mechanisms, it articulated collective expectations regarding violence cessation, dialogue, humanitarian access, and special envoy engagement.

During its 2023 Chairmanship, Indonesia sought to operationalize this framework through enhanced interaction diplomacy. [10] The introduction of the Troika mechanism—linking past, present, and future ASEAN chairs—was designed to strengthen continuity across chairmanship cycles. By institutionalizing follow-up and coordination, Indonesia aimed to sustain diplomatic pressure without breaching ASEAN’s foundational norms. [6] Indonesia’s approach also included the exclusion of Myanmar’s Junta leaders from high-level ASEAN summits, signaling disapproval without formal sanctions. [10], [16] At the same time, Jakarta maintained quiet channels of communication with a wide range of stakeholders, reflecting its belief that access and inclusivity are prerequisites for any eventual political settlement. [16]

Despite these initiatives, the situation in Myanmar has deteriorated. Armed conflict has expanded, humanitarian conditions have worsened, and political dialogue remains elusive. This outcome, however, reflects not diplomatic neglect but institutional limitation. The Myanmar case demonstrates three critical failures of strategic interaction that institutional reform alone cannot address:

First, the Five-Point Consensus functions as a signaling failure. The junta interprets consensus without enforcement as permission for low-cost defiance. ASEAN’s approach communicates concern but not consequence, creating a strategic environment in which Myanmar’s military leadership can selectively engage without altering behavior. The consensus becomes a diplomatic artifact rather than a behavioral constraint.

Second, the Troika mechanism represents continuity without leverage. While institutional memory is valuable, it does not create institutional authority. The Troika ensures consistent messaging across chairmanship cycles, but it does not alter the fundamental power asymmetry between ASEAN and the junta. Continuity amplifies process but not pressure.

Third, interaction diplomacy reveals asymmetric access. ASEAN seeks access to Myanmar to demonstrate relevance and maintain dialogue channels. Myanmar’s junta, by contrast, does not require ASEAN’s validation or access to pursue its domestic objectives. This asymmetry means that engagement, absent other forms of leverage, becomes a concession rather than a negotiation tool.

Indonesia’s role in this context is best understood as damage control rather than conflict resolution. ASEAN’s response has been constrained by the absence of robust enforcement mechanisms and by the political limits inherent in consensus and non-interference. Therefore, the more pertinent issue is whether ASEAN, as currently constituted, possesses the institutional capacity—and the strategic will—to move beyond symbolic engagement toward differentiated action that imposes costs on non-compliance.

The South China Sea: Legal Unity amid Strategic Divergence

In the South China Sea, Indonesia confronts a different analogous challenge. Indonesia’s exclusive economic zone near the Natuna Islands overlaps with expansive maritime claims that Jakarta rejects as inconsistent with UNCLOS. [7] Indonesia has generally pursued a law-centered and enforcement-oriented approach while avoiding overt escalation. Rather than pursuing megaphone diplomacy or military escalation, Jakarta has strengthened maritime law enforcement, clarified its legal positions, and embedded its objections within multilateral and legal frameworks. [2], [7] This approach reflects Indonesia’s long-standing belief that international law offers the most durable hedge for middle powers facing asymmetrical pressure.

Indonesia’s maritime diplomacy respects legal clarity without confrontation, operational firmness without alignment, and multilateral engagement without coercion. The country has consistently supported the development of a substantive and binding Code of Conduct between ASEAN and China. During its 2023 Chairmanship, Jakarta sought to reinvigorate negotiations and emphasize the code’s role as a risk-reduction and incident-prevention mechanism. [17] However, progress has been slow. ASEAN member states differ in their threat perceptions, economic dependencies, and strategic priorities. Some favor firmer collective positions, while others prioritize bilateral engagement with China. These divisions, compounded by China’s preference for bilateralism, constrain ASEAN’s ability to present a coherent front.

Indonesia’s diplomatic energy would be better spent complementing the Code of Conduct between ASEAN and China with operational mechanisms that ASEAN states can control directly. First, through shared surveillance networks, standardized reporting protocols, and real-time information exchange on maritime activities in contested waters. Second, create transparent, accessible mechanisms for documenting and publicizing incidents involving intimidation, coercion, or unsafe navigation. Third, support joint training, resource sharing, and coordinated patrols among willing ASEAN members to enhance enforcement capacity in their respective exclusive economic zones. These operational coalitions preserve the unity that ASEAN was established for.

Indonesia as ASEAN’s System Stabilizer

Viewed together, the Myanmar crisis and the South China Sea disputes highlight the distinctive character of Indonesia’s leadership within ASEAN. In both cases, Indonesia has acted consistently and proactively to preserve diplomatic process, uphold shared norms, and prevent institutional erosion at moments of acute regional stress. However, in neither context has Indonesia been able to deliver decisive conflict resolution. This recurring pattern suggests that Indonesia functions less as a direct problem-solver and more as a system stabilizer within the ASEAN framework. Its leadership has been instrumental in maintaining ASEAN unity under severe strain, sustaining ASEAN centrality in regional security discourse, anchoring collective diplomacy in principles of international law and inclusivity, and retaining strategic trust across competing power centers.

At the same time, Indonesia’s efforts are constrained by persistent structural limitations inherent to ASEAN itself, including an overreliance on unanimity as a decision-making rule, the absence of enforcement mechanisms, fragmented leadership among member states, and pronounced asymmetries in power between ASEAN and external actors. Recognizing Indonesia as a system stabilizer reframes how its diplomacy should be evaluated: Whether Indonesia’s leadership has prevented them from undermining ASEAN’s institutional relevance and regional autonomy altogether.

Yet it raises an uncomfortable secondary question: Is stabilization without resolution a sustainable strategic posture? Recent shifts in Indonesia’s diplomatic approach, evidenced by declining optimism about ASEAN’s transformative potential and a turn toward expectation management, suggest that Jakarta itself may be recognizing the limits of system stabilization as an end state. If Indonesia’s leadership becomes defined primarily by preventing collapse rather than enabling progress, ASEAN risks becoming institutionally ossified, being present but irrelevant, unified but ineffective.

From Symbolic Unity to Functional Cohesion: A Strategic Recalibration

If ASEAN unity is to function as a practical instrument of conflict management, Indonesia must lead a strategic recalibration in how unity is conceived and operationalized. This recalibration requires concrete institutional reforms, strategic narrative discipline, and a willingness to embrace differentiated action as a complement to collective consensus.

First, unity need not imply uniformity. A qualified participation protocol within ASEAN would distinguish between authorization and implementation, in which consensus authorizes action, but voluntary participation implements it. Second, transforming the Troika into a standing crisis management platform beyond chairmanship continuity. It should be empowered with a clear mandate mechanism for crisis situations and the authority to coordinate humanitarian corridors, without requiring case-by-case approval from all member states. Third, centralized ASEAN strategic communication capacity, particularly for the South China Sea, to ensure consistent, disciplined messaging. Last, recalibrate Indonesia’s leadership posture, shifting into agenda-setting mode when institutional paralysis threatens ASEAN’s strategic relevance.

Conclusion

Indonesia’s ASEAN diplomacy should not be judged solely by the absence or presence of conflict resolution. In an era of fragmented regional politics and intensified great-power competition, the preservation of institutional relevance, normative coherence, and regional autonomy is itself a strategic achievement. Indonesia’s role as system stabilizer has prevented ASEAN from collapsing under the weight of internal and external pressures—a contribution that should not be underestimated.

However, stabilization alone is an insufficient foundation for long-term institutional viability. The strategic drift from agenda-setting leadership to expectation management, while understandable given structural constraints, risks locking ASEAN into a cycle of managed decline. If Indonesia’s strategic culture—particularly its aversion to escalation and its commitment to inclusive engagement—has become a ceiling rather than an asset, then selective recalibration becomes necessary for institutional survival.

The Myanmar crisis demonstrates that improved diplomatic architecture without a leverage structure yields a process without pressure. The South China Sea disputes reveal that legal unity without operational coordination produces norms without deterrence. In both cases, the path forward requires not abandoning ASEAN’s foundational principles, but operationalizing them through differentiated action, institutionalized flexibility, and strategic narrative discipline.

Indonesia remains uniquely positioned to lead this transformation. Its legitimacy, size, and long-standing investment in ASEAN centrality provide the credibility necessary to champion institutional reform without threatening fragmentation. But leadership requires more than convening and mediating—it requires the willingness to move ahead of consensus when collective paralysis undermines collective interests. Indonesia must decide whether it will continue to stabilize a declining system or lead the recalibration necessary to make ASEAN unity functionally effective. The choice between preservation and transformation will define ASEAN’s relevance in the coming decade—and Indonesia’s legacy within it.

[1]      Dafri Agussalim and Tunggul Wicaksono, “Navigating Turbulence: ASEAN’s Leadership Challenges in the Human Rights Violation in Myanmar and South China Sea Dispute,” Journal of ASEAN Studies 12, no. 1 (2024): pp. 157–184, doi: 10.21512/jas.v12i1.11158.

[2]      Najla Al Midfa, ASEAN and the South China Sea: Managing Regional Tensions,” TRENDS Research & Advisory, October 30, 2025,  https://trendsresearch.org/insight/asean-and-the-south-china-sea-managing-regional-tensions/?srsltid=AfmBOorOak8j2vfkNt8Ywjfi6Jw8eb0irMYOpIyslnFiIxSk_7J_gimd. Accessed December 18, 2025.

[3]      Akhmad Hanan, “ASEAN at a Crossroads: Unity or Fragmentation in the South China Sea Dispute,” Australian Institute of International Affairs,” September 3, 2025, https://www.internationalaffairs.org.au/australianoutlook/asean-at-a-crossroads-unity-or-fragmentation-in-the-south-china-sea-dispute/. Accessed December 18, 2025.

[4]      Simon Hutagalung, “Singapore’s Strategic Vision For ASEAN: Unity, Security, And Survival In 2025 – OpEd,” Eurasia Review October 26, 2025, https://www.eurasiareview.com/26102025-singapores-strategic-vision-for-asean-unity-security-and-survival-in-2025. Accessed December 18, 2025.

[5]      Robert G. Sutter and Chin-Hao Huang, “Myanmar, South China Sea Issues,” Comparative Connections 11, no. 3 (July-September 2009), https://cc.pacforum.org/2009/10/myanmar-south-china-sea-issues/. Accessed December 18, 2025.

[6]      Tang Siew Mun, “Re-examining the five-point consensus and ASEAN’s response to the Myanmar crisis,” ISEAS – Yusof Ishak Institute, vol. 20, 2025.

[7]      Anak Agung Ayu Diah Setyawati and Asyaffa Ridzqi Amandha, “Indonesia’s Cooperation with ASEAN Countries in Handling Transnational Crime Cases: South China Sea Dispute,” Law Research Review Quarterly 8, no. 1 (February 2022): pp. 1–32, doi: 10.15294/lrrq.v8i1.52813.

[8]      Simon Hutagalung, “Realism And Idealism In Indonesia’s Global Strategy – OpEd,” Eurasia Review, October 5, 2025, https://www.eurasiareview.com/05102025-realism-and-idealism-in-indonesias-global-strategy. Accessed December 18, 2025.

[9]      Gregory B. Poling and Andreyka Natalegawa, “Between Two Reefs: Indonesia’s Strategic Culture in the Twenty-First Century,” CSIS, December 2, 2025, https://www.csis.org/analysis/between-two-reefs-indonesias-strategic-culture-twenty-first-century. Accessed December 19, 2025.

[10]    Tedi Gunawan, “Between Principles and Actions: ASEAN and Indonesia in Dealing With The Political Crisis In Myanmar,” Jurnal Global & Strategis 18, no. 1 (June 2024): pp. 81–106, doi: 10.20473/jgs.18.1.2024.81-106.

[11]    “Where has Indonesia’s optimism gone?” Lowy Institute, https://www.lowyinstitute.org/the-interpreter/debate/where-has-indonesia-s-optimism-gone. Accessed December 18, 2025.

[12]    Qistina Sallehuddin, Iylia Marsya Iskandar, and Hakim Mahari, “Asean unity vital in addressing Myanmar, South China Sea disputes,” New Straits Times, October 25, 2025, https://www.nst.com.my/news/nation/2025/10/1301478/asean-unity-vital-addressing-myanmar-south-china-sea-disputes#google_vignette. Accessed December 18, 2025.

[13]    Kevin Zongzhe Li, “Can the ASEAN Way Survive 2026?” The Diplomat, December 17, 2025, https://thediplomat.com/2025/12/can-the-asean-way-survive-2026/. Accessed December 18, 2025.

[14]    Council of Foreign Relations, “Civil War in Myanmar,” Global Conflict Tracker, https://www.cfr.org/global-conflict-tracker/conflict/rohingya-crisis-myanmar. Accessed December 18, 2025.

[15]    “Myanmar: ASEAN’s Failed ‘5-Point Consensus’ a Year On,” Human Rights Watch, April 22, 2022, https://www.hrw.org/news/2022/04/22/myanmar-aseans-failed-5-point-consensus-year. Accessed December 18, 2025.

[16]    “ASEAN Leaders’ Review and Decision on the Implementation of the Five-Point Consensus Kuala Lumpur, Malaysia,” ASEAN portal, October 26, 2025, https://asean.org/asean-leaders-review-and-decision-on-the-implementation-of-the-five-point-consensus-kuala-lumpur-malaysia/. Accessed December 19, 2025.

[17]    “Chairman’s Statement of the 26th ASEAN-China Summit,” ASEAN portal, September 9, 2023, https://asean.org/chairmans-statement-of-the-26th-asean-china-summit/. Accessed December 18, 2025.