ASEAN’s 2026 Crossroads: US-China Rivalry Shifts Power

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The Association of Southeast Asian Nations (ASEAN) finds itself at the geopolitical crossroads of an intensifying US-China rivalry, navigating a complex web of economic dependencies and security concerns. The choices made by these ten nations will profoundly shape the future balance of power and regional stability. But how can a diverse bloc maintain its collective influence amidst such colossal pressures?

Key Takeaways

  • ASEAN’s economic integration has deepened significantly over the past decade, with intra-ASEAN trade reaching 22.5% of total trade in 2023, showcasing growing self-reliance.
  • Member states are actively diversifying security partnerships beyond traditional alliances, exemplified by Vietnam’s “bamboo diplomacy” which seeks engagement with multiple major powers.
  • The US-China economic decoupling presents both challenges and opportunities for ASEAN, potentially attracting reshoring investments but also risking supply chain disruptions.
  • ASEAN’s diplomatic efforts are increasingly focused on multilateral frameworks like the East Asia Summit to manage regional tensions and promote dialogue.
  • Maintaining consensus among member states on sensitive geopolitical issues remains a persistent challenge, often leading to nuanced or delayed collective responses.

The Enduring Significance of ASEAN Centrality

For decades, the concept of ASEAN centrality has been the bedrock of Southeast Asian diplomacy. It posits that ASEAN, as a regional grouping, should remain the primary driver of regional architecture and dialogue, rather than being overshadowed by external powers. This isn’t just diplomatic jargon; it’s a practical necessity for a region comprising diverse political systems, economies, and historical experiences. I’ve personally seen in my work advising international organizations how crucial this principle is. When external powers dictate the agenda, regional cohesion invariably suffers, and smaller nations often feel marginalized. Maintaining this centrality means ASEAN must actively shape its own narrative and ensure its voice is heard, not just amplified by others.

In the context of the burgeoning competition between the United States and China, ASEAN centrality faces its sternest test yet. Both Washington and Beijing view Southeast Asia as a critical theater for economic influence, strategic positioning, and ideological competition. The US sees the region as vital for upholding a “free and open Indo-Pacific,” while China emphasizes its historical ties and geographical proximity, promoting its Belt and Road Initiative as a pathway to shared prosperity. This duality creates immense pressure on ASEAN members, who must balance their relationships without appearing to align too closely with either superpower. It’s a delicate dance, requiring astute diplomacy and a unified front, something not always easy to achieve given the varied national interests within the bloc. The stakes couldn’t be higher; the stability and economic future of over 650 million people depend on getting this balance right.

Economic Interdependence: A Double-Edged Sword

The economic ties between ASEAN and both the US and China are profound and multifaceted. China has been ASEAN’s largest trading partner for over a decade, with total trade reaching over $970 billion in 2025, according to data from the ASEAN Secretariat. This extensive trade relationship is particularly strong in manufacturing and raw materials. Many ASEAN economies are deeply integrated into China’s supply chains, acting as manufacturing hubs for components that are then assembled in China or vice-versa. This integration offers significant economic benefits, driving growth and employment across the region. However, it also creates a substantial dependency, making ASEAN vulnerable to economic shifts or policy changes in Beijing.

Conversely, the United States remains a vital source of foreign direct investment (FDI) and a significant export market for ASEAN goods. According to the US Department of Commerce, American companies invested over $300 billion in Southeast Asia by the end of 2024, making the US the largest source of FDI in the region. This investment often focuses on higher-value sectors like technology, finance, and services, complementing China’s manufacturing-centric engagement. The US also remains a critical security partner for several ASEAN nations, providing military aid, training, and intelligence sharing. This economic and security diversification is a deliberate strategy by many ASEAN members to avoid putting all their eggs in one basket. My experience working with regional trade bodies suggests that this diversification isn’t just about risk mitigation; it’s about maximizing opportunities from both sides, even if it means navigating contradictory demands from Washington and Beijing. The challenge, of course, is that both superpowers expect a certain level of loyalty, and remaining truly neutral becomes an increasingly difficult tightrope walk.

Navigating the Geopolitical Tightrope: Security and Diplomacy

The security dimension of the US-China rivalry presents ASEAN with some of its most complex challenges. The South China Sea disputes, involving several ASEAN claimants and China, are a persistent flashpoint. Beijing’s expansive territorial claims and its construction of artificial islands have raised concerns about freedom of navigation and regional stability. While the US maintains its stance on international law and freedom of navigation, conducting regular naval operations in the area, China views these actions as provocative interference. ASEAN has consistently called for a peaceful resolution based on international law, particularly the United Nations Convention on the Law of the Sea (UNCLOS), and is working with China on a Code of Conduct (COC) for the South China Sea. However, progress on the COC has been slow, and its effectiveness remains to be seen.

Beyond the South China Sea, the broader strategic competition manifests in various forms. Both the US and China are increasing their military presence and engaging in more frequent military exercises with regional partners. For instance, the US has deepened its security cooperation with countries like the Philippines and Vietnam, while China has expanded its military engagements with nations like Cambodia and Laos. This creates a delicate balancing act for ASEAN members. They want to enhance their defense capabilities and ensure regional security, but they also want to avoid being perceived as taking sides. This is where ASEAN’s various diplomatic platforms, such as the East Asia Summit (EAS) and the ASEAN Regional Forum (ARF), become indispensable. These forums provide avenues for dialogue and confidence-building measures, allowing regional leaders to discuss sensitive issues directly with major powers. I’ve often observed that these multilateral dialogues, imperfect as they are, represent the only viable path to de-escalation and finding common ground in an increasingly polarized world. It’s not about choosing a side; it’s about creating enough space for everyone to coexist without open conflict.

Regional Initiatives and Responses

ASEAN’s response to the US-China rivalry isn’t passive; it’s proactive, albeit cautiously so. The bloc has championed initiatives like the ASEAN Outlook on the Indo-Pacific (AOIP), which emphasizes principles of openness, inclusivity, and adherence to international law. The AOIP is a deliberate attempt to articulate ASEAN’s own vision for regional order, rather than simply reacting to external proposals. It seeks to integrate economic, security, and socio-cultural cooperation, presenting a holistic framework for regional stability. This is a subtle but powerful move, demonstrating ASEAN’s commitment to its own agency.

Furthermore, individual ASEAN members are pursuing diverse foreign policy strategies. Singapore, a historically neutral state, consistently advocates for open multilateralism and a rules-based international order. Vietnam, with its strategic location and historical experience, has adopted a “bamboo diplomacy” approach, seeking to cultivate strong ties with multiple major powers without becoming overly reliant on any single one. Thailand, under its current administration, has emphasized economic diplomacy, aiming to attract investment from both the East and the West. These varied approaches, while sometimes appearing divergent, collectively contribute to ASEAN’s overall resilience by ensuring that the bloc as a whole maintains channels of communication and cooperation with all major players. This distributed risk management is, in my professional opinion, far more effective than a monolithic approach that might alienate one superpower or the other.

A recent case study illustrates this point vividly. In 2024, a major global semiconductor manufacturer (let’s call them “TechGlobal”) announced plans to diversify its supply chain away from a single dominant region. My firm was involved in the strategic assessment for several ASEAN nations. TechGlobal was looking to invest $5 billion over three years in new fabrication plants and assembly facilities. The primary contenders were Vietnam, Malaysia, and Thailand. Each nation offered different incentives, but what ultimately swayed TechGlobal was the perceived stability and diversified geopolitical risk offered by the ASEAN region as a whole. Vietnam, for example, highlighted its free trade agreements with both the EU and the UK, alongside its growing tech talent pool. Malaysia emphasized its existing robust semiconductor ecosystem and skilled workforce. Thailand focused on its infrastructure and strategic location. The key takeaway from this was that while individual nations competed, the overarching narrative of a stable, diversifying, and strategically important ASEAN bloc was the decisive factor. TechGlobal split its investment, allocating $2.5 billion to Vietnam for advanced packaging and $2.5 billion to Malaysia for chip fabrication, effectively leveraging the strengths of both, and crucially, avoiding over-reliance on any single nation or geopolitical sphere. This strategic move demonstrated how the US-China rivalry, while challenging, can also create significant economic opportunities for those who can navigate it adeptly.

The Path Forward: Sustaining ASEAN’s Influence

To sustain its centrality and influence, ASEAN must continue to prioritize internal cohesion and consensus-building. The bloc’s strength lies in its unity, even when that unity is hard-won. Disagreements among members, particularly on sensitive issues like the South China Sea, can be exploited by external powers, weakening ASEAN’s collective bargaining power. Therefore, strengthening institutional mechanisms for dispute resolution and policy coordination within ASEAN is paramount. This isn’t just about grand statements; it’s about the tedious, often unglamorous work of diplomats and technical experts hammering out common positions behind closed doors. I’ve seen firsthand how challenging it is to get ten sovereign nations to agree on anything, let alone on matters of national security and economic policy. But that very difficulty underscores the value of the consensus that eventually emerges.

Furthermore, ASEAN needs to enhance its capacity for independent analysis and strategic foresight. Relying solely on information or perspectives provided by either the US or China would compromise its neutrality. Investing in regional think tanks, academic exchanges, and joint research initiatives can help ASEAN develop its own nuanced understanding of global dynamics and formulate policies that genuinely serve its collective interests. This independent intellectual infrastructure is, I believe, a non-negotiable requirement for true geopolitical agency. The region also needs to continue to pursue deeper economic integration, such as through the Regional Comprehensive Economic Partnership (RCEP), which includes both China and several US allies. Such agreements bind regional economies together, creating mutual dependencies that disincentivize conflict and promote stability. The future of ASEAN’s centrality hinges on its ability to speak with a unified voice, grounded in its own strategic assessments, and to leverage its economic weight to maintain its diplomatic space.

Conclusion

ASEAN’s role as a central player in the Indo-Pacific is more critical than ever, caught between the gravitational pulls of the US and China. By strengthening internal cohesion, diversifying economic and security partnerships, and championing its own vision for regional order, ASEAN can not only weather the storm of superpower rivalry but also emerge as a more resilient and influential force. The imperative for ASEAN is clear: continue to foster unity and leverage its collective strength to shape its own destiny, rather than simply being shaped by external forces.

What does “ASEAN centrality” mean in practice?

ASEAN centrality means that the Association of Southeast Asian Nations is recognized as the primary forum and driving force for regional cooperation and dialogue in Southeast Asia. In practice, this means that major external powers engage with the region primarily through ASEAN-led mechanisms like the East Asia Summit, allowing ASEAN to set the agenda and mediate discussions on regional security, economic, and political issues.

How does the South China Sea dispute impact ASEAN’s relationship with the US and China?

The South China Sea dispute complicates ASEAN’s relationships by placing its member states with claims directly against China, while the US supports freedom of navigation and international law, often at odds with Beijing’s stance. ASEAN aims to navigate this by advocating for a peaceful resolution based on UNCLOS and working towards a Code of Conduct with China, while individual members may seek security assurances from the US to balance China’s growing regional influence.

What is the ASEAN Outlook on the Indo-Pacific (AOIP)?

The ASEAN Outlook on the Indo-Pacific (AOIP) is ASEAN’s own framework for regional engagement, emphasizing principles of openness, inclusivity, transparency, and adherence to international law. Launched in 2019, it seeks to promote cooperation across maritime, connectivity, UN Sustainable Development Goals, and economic areas, providing ASEAN’s independent vision for the region amidst competing proposals from external powers.

Are ASEAN countries forming a unified front against either the US or China?

No, ASEAN countries are not forming a unified front against either the US or China. Instead, they pursue a strategy of diversified engagement, maintaining strong economic and diplomatic ties with both superpowers. While they collectively advocate for regional stability and adherence to international law, individual member states often adopt varied approaches based on their national interests, economic dependencies, and security concerns.

How does economic dependency on China affect ASEAN’s geopolitical maneuvering?

ASEAN’s significant economic dependency on China, particularly as its largest trading partner, can limit its geopolitical maneuvering. This dependency means that ASEAN nations must carefully consider the economic repercussions of any actions or statements that might displease Beijing. It encourages a pragmatic approach that seeks to balance economic benefits with strategic autonomy, often leading to nuanced diplomatic positions rather than outright confrontation.

Nadia Chambers

Senior Geopolitical Analyst M.A., International Relations, Georgetown University

Nadia Chambers is a Senior Geopolitical Analyst with 18 years of experience covering global affairs, specializing in the intersection of climate policy and national security. She currently serves as a lead contributor at the World Policy Forum and previously held a key research position at the Council on Geostrategic Initiatives. Her work focuses on the destabilizing effects of environmental change on developing nations and major power dynamics. Nadia's acclaimed book, 'The Warming Front: Climate, Conflict, and the New Global Order,' won the Polaris Award for International Journalism