ASEAN’s Big Test: Can Unity Survive in an Age of Polarisation?

The 47th ASEAN Summit in Kuala Lumpur from 26–28 October 2025 marked a pivotal moment for Southeast Asia. With East Timor’s historic entry as ASEAN’s 11th member, an upgraded ASEAN-China Free Trade Agreement, and renewed engagement from major powers, the summit reflected both opportunity and strain. The question now is whether ASEAN’s long-standing unity can hold amid global polarisation and rising protectionism.

Bayn Market Insights Team

By 

Bayn Market Insights Team

Published 

October 28, 2025

ASEAN’s Big Test: Can Unity Survive in an Age of Polarisation?

Image Source: ASEAN Main Portal

Key Takeaways

  • East Timor joins ASEAN as the 11th member, the bloc’s first expansion in over two decades.
  • ASEAN-China FTA 3.0 deepens cooperation in infrastructure, digitalisation, and sustainability.
  • US-China competition continues to shape ASEAN’s foreign policy balancing act.
  • RCEP leaders renew commitment to regional supply-chain stability amid global tariffs.
  • ASEAN’s political unity remains fragile despite economic cohesion.

A milestone for ASEAN’s growth

East Timor’s induction into ASEAN is a commitment to regional inclusivity, marking the bloc’s first enlargement in 26 years. Yet this step also introduces new challenges. With economies ranging from Singapore’s high-income status to Timor-Leste’s developing economy, ASEAN must reconcile differing capacities and priorities. Integrating Timor-Leste effectively will test the bloc’s ability to deliver on its promise of balanced development.

A crowded field of influence

The summit drew leaders from across the world, including US President Donald Trump, who pushed new trade proposals and helped facilitate a peace accord between Thailand and Cambodia. China’s delegation, on the other hand, reaffirmed its long-term commitment to Southeast Asia through an upgraded ASEAN-China Free Trade Agreement 3.0, expanding cooperation on infrastructure, digital transition, and sustainability.

These parallel moves underscored ASEAN’s delicate position. Prime Minister Anwar Ibrahim, as summit host, warned of “narrowing space for neutrality,” capturing the pressure ASEAN faces as global powers vie for influence in the Indo-Pacific. Maintaining regional autonomy amid external competition will define the bloc’s strategic credibility in the coming decade.

Pragmatism over ideology

The upgraded ASEAN-China FTA 3.0 is a pragmatic response to shifting trade realities. Building on the 2010 agreement, it aims to enhance trade facilitation, encourage sustainable development, and support digital integration across ASEAN and China. This move comes at a time when US tariffs continue to affect regional economies, pushing ASEAN members to deepen cooperation within Asia rather than rely on Western demand.

Leaders under the Regional Comprehensive Economic Partnership (RCEP) also reconvened, highlighting the bloc’s intent to stabilise supply chains and strengthen regional production networks despite global uncertainty.

Politics still the weak link

Despite economic progress, political unity remains elusive. The South China Sea dispute and the Myanmar crisis once again divided members. ASEAN’s consensus-based model, which has long underpinned regional stability, now limits its ability to respond swiftly to complex political issues. The bloc’s strength in trade diplomacy contrasts sharply with its cautious approach to security and governance challenges.

Transition and reflection

The summit concluded with the ASEAN chairmanship passing to the Philippines, setting the stage for 2026. The next chapter of ASEAN’s story will depend on its ability to turn rhetoric into resolve. Unity cannot rest solely on tradition; it requires coordination, trust, and shared accountability across vastly different political systems.

ASEAN’s centrality remains both an asset and a burden. Its relevance will depend on how well it adapts to a new multipolar order where neutrality is no longer enough.

Editor’s Note: Why This Matters for the Gulf and Beyond

ASEAN’s ability to maintain internal unity amid competing global pressures holds direct implications for the Gulf Cooperation Council (GCC) and other emerging blocs. As the Gulf diversifies trade and investment eastward, a cohesive and confident ASEAN offers a stable gateway into Asia’s fast-growing markets.

Both regions share parallel goals: navigating great-power competition without becoming collateral, deepening South-South trade, and advancing energy transition and digital connectivity agendas.

For Gulf investors, policymakers, and enterprises, ASEAN’s 2025 summit serves as a timely reminder that the strength of any regional partnership depends on one thing — collective resilience in a fragmented world.

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