Manila’s 2026 ASEAN chairmanship comes at a perilous inflection point: a rare chance to shape regional architecture, but also a minefield of entrenched disputes, great-power rivalry and fractious domestic politics.

Can the Philippines succeed where Kuala Lumpur fell short? The short answer: only modestly, and only if Manila pursues a sober, patient and multifaceted strategy that accepts limits while seizing leverage.

The most visible test is the Code of Conduct (CoC) for the South China Sea. ASEAN’s draft with compliance mechanisms marked progress, but Beijing’s consistent refusal to accept constraints on island-building, militarization or coercive tactics remains the fundamental obstacle.

China’s grey-zone harassment of Filipino boats and its refusal to accept enforcement language mean Manila cannot force Beijing to sign.

Realistic success here is incremental: securing ASEAN unity behind stronger language, a clearer set of confidence-building measures such as incident hotlines, navigation protocols and joint search-and-rescue drills, and an agreed monitoring and oversight framework.

Even without Beijing’s immediate buy-in, such steps would raise the reputational and diplomatic cost of Chinese coercion, reinforce the legal argument underpinning the 2016 Arbitral Award, and provide littoral states practical tools to manage incidents.

That said, ASEAN cohesion is fragile. Kuala Lumpur’s failure partly reflected internal divisions, with members balancing economic ties with Beijing against security concerns, and the Philippines faces the same fault lines.

Manila’s greatest asset is its convening authority. As chair, it can prioritize agenda items, shepherd compromise language and spotlight conflicts.

But leverage depends on forging coalitions of the willing, including Australia, Japan, India and Quad partners, while keeping ASEAN’s consensus-driven processes intact. Success requires Manila to be the patient broker, not the provocateur, presenting the CoC as a risk-management instrument, not an anti-China treaty.

Manila’s diplomatic credibility is also tested by Myanmar and intra-ASEAN tensions. The military junta’s sham elections and human rights abuses demand a calibrated blend of pressure and engagement.

Here Manila can apply “ASEAN tools,” including a clear roadmap for humanitarian access and support for inclusive dialogue, while rallying resources for displaced populations. On Cambodia-Thailand flare-ups, Manila’s role should emphasize mediation, confidence-building and quick mobilization of observers, demonstrating that ASEAN can respond to member-on-member violence without external arbiters.

Externally, the US relationship is both a resource and a risk. Washington’s security guarantees matter to Manila, but the unpredictability of US policy, including trade tariffs and shifting priorities, complicates alliance management.

Manila’s task is to diversify: deepen practical security ties such as intelligence sharing and coast guard capacity, while bolstering economic linkages with Japan, Australia, South Korea and the EU.

Economic diplomacy, including reducing tariff vulnerabilities, improving the business climate and attracting investment, will buttress strategic independence.

Domestic politics is the wildcard. Marcos must demonstrate coherence and institutional resolve to show anti-corruption credibility, unified foreign policy messaging and bipartisan support for ASEAN priorities.

A politically fragmented chair risks undercutting diplomatic consistency and limiting Manila’s negotiating capital.

In sum, Manila can achieve meaningful, if limited, progress: consolidate ASEAN unity on procedural and non-binding but operationally useful elements of the CoC; elevate regional incident-management capacity; keep Myanmar on the diplomatic front burner; and show ASEAN that it can manage intra-bloc conflict.

Ultimately, success will be judged not by dramatic victories but by durable institution-building: better crisis mechanisms, clearer norms of conduct at sea and deeper practical cooperation among ASEAN and like-minded partners.

If Manila focuses on pragmatic, incremental gains while avoiding grandiose promises, it can convert Kuala Lumpur’s failure into a modest Philippine accomplishment: strengthening regional resilience even amid tension among the world’s major powers.