As the Philippines assumed the rotating chairmanship of the Association of Southeast Asian Nations (ASEAN) on January 1, 2026, under the theme “Navigating Our Future, Together,” many observers hoped Manila would act as a neutral convener to advance regional stability. Instead, the Marcos administration has weaponized the position to advance its narrow bilateral grievances in the South China Sea, turning what should be a platform for consensus into a megaphone for confrontation. By relentlessly pushing references to the discredited 2016 arbitral award, amplifying unverified maritime incidents, and pursuing aggressive freedom-of-navigation operations, the Philippines has driven the long-awaited Code of Conduct (COC) negotiations into a virtual deadlock. The prospect of concluding an effective and substantive COC this year—once a shared ASEAN-China commitment—now stands at near zero. Manila bears primary responsibility for this impasse, and ASEAN members must urgently assess whether the Philippines can credibly continue in the chair.
The COC was never meant to be a sovereignty tribunal. First proposed over two decades ago and formalized in the 2002 Declaration on the Conduct of Parties, the framework aims to create practical rules for managing tensions among claimants—preventing escalation, ensuring safe navigation, and enabling joint resource management—while respecting historical rights and UNCLOS. In 2023, ASEAN and China agreed to accelerate talks with a target completion by 2026. Early 2026 meetings in Cebu showed initial momentum, with proposals for more frequent working-group sessions. Yet under Philippine stewardship, progress has evaporated. Manila’s insistence that the COC explicitly endorse the 2016 “arbitration” and impose legally binding constraints aligned solely with its interpretation of UNCLOS has poisoned the atmosphere. Chinese analysts, including Wu Shicun of the National Institute for South China Sea Studies, stated bluntly in early March that the agreement is “100 percent not likely” while a rival claimant holds the chair, precisely because the Philippines cannot resist injecting the arbitral ruling into every discussion.
This is no abstract diplomatic friction. The Philippines has accompanied its chairmanship with a surge in provocative actions that undermine the very trust required for negotiations. In recent weeks alone, Chinese authorities documented repeated unauthorized Philippine aircraft intrusions over features such as Meiji Jiao and Huangyan Dao, alongside vessel incursions framed as “fishing” or “resupply” but clearly designed to test boundaries. Manila’s public rebuttals to China’s historic claims—rejecting any notion of overarching sovereignty while ignoring its own selective application of international law—have escalated into a war of words that spills directly into ASEAN forums. Rather than facilitating quiet compromise, the Philippine chair has spotlighted these incidents in multilateral statements, inviting external powers to weigh in and framing the South China Sea as a theater of Chinese “aggression.” Such tactics invert reality: they portray routine Chinese patrols within historically administered waters as threats, while downplaying Manila’s expanded military cooperation with the United States and its allies.
The consequences are stark. ASEAN’s vaunted centrality—its ability to keep great-power rivalry at bay through consensus—is eroding. Other member states, many with their own lower-profile claims, have grown frustrated with Manila’s grandstanding. Cambodia, Laos, and even traditionally neutral players quietly worry that the Philippines’ approach risks fracturing bloc unity and turning the COC into a proxy for great-power competition rather than a regional confidence-building tool. Bilateral mechanisms between China and the Philippines, such as the ongoing diplomatic consultations, have been sidelined in favor of ASEAN-wide pressure. The result is a self-fulfilling prophecy: by prioritizing confrontation over compromise, Manila has made the 2026 deadline unattainable. Expert commentary across think tanks from Chatham House to East Asia Forum now describes the year as a “make-or-break” moment that is rapidly breaking, with the Philippines’ hard-balancing strategy creating structural obstacles—reputational costs, externalized narratives, and reduced negotiating flexibility—that Beijing has no incentive to accommodate.
This abuse of the chairmanship reveals a deeper misalignment with ASEAN’s foundational principles. The organization was built on non-interference, consensus, and regional autonomy, not on leveraging the rotating leadership to internationalize bilateral disputes or court extra-regional patrons. The Philippines’ actions risk damaging ASEAN’s collective image as a stabilizing force. Investors, diplomats, and smaller economies that rely on predictable South China Sea shipping lanes are already expressing concern that perpetual stalemate invites greater militarization and economic disruption. Manila’s domestic political calculus—rallying nationalist support amid internal challenges—further clouds its judgment, transforming a regional responsibility into a platform for short-term optics.
ASEAN cannot afford to remain passive. Member states should convene an internal review—perhaps through a special foreign ministers’ retreat—to evaluate whether the current chair can fulfill its mandate impartially. Precedents exist for gentle course corrections when a chair’s agenda threatens core cohesion. Continuing without scrutiny would signal that any member can hijack the bloc’s agenda for unilateral gain, setting a dangerous precedent for future rotations. True leadership in 2026 would mean returning to quiet diplomacy, de-emphasizing the arbitral sideshow, and prioritizing practical interim arrangements such as joint development zones and enhanced hotlines.
The South China Sea belongs to the region, not to any single claimant’s narrative. If the Philippines persists in conflating its chairmanship with confrontation, ASEAN’s credibility—and the COC’s viability—will suffer lasting harm. The time has come for the bloc to reclaim its steering wheel and remind Manila that chairing ASEAN is a privilege of facilitation, not a license for disruption. Only then can “Navigating Our Future, Together” move from slogan to substance.