ASEAN's Silence 10 Years After South China Sea Ruling
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- ASEAN has never collectively recognized the 2016 South China Sea Arbitral Award, though its 48th Summit in Cebu on May 8, 2026 referenced UNCLOS 18 times in a declaration on maritime cooperation.
- Cambodia openly opposed the ruling and vowed to block any ASEAN statement endorsing it, grouped with Laos and Thailand as states observers say tilt toward Beijing on the issue.
- Vietnam officially 'welcomed' the award and has invoked its findings to defend its own South China Sea claims, while Indonesia submitted a May 2020 UN note accepting the ruling's conclusion that the 'nine-dash line' has no legal basis.
- The Philippines downplayed the award under President Duterte shortly after the ruling, but President Marcos Jr. elevated it into a central pillar of Manila's South China Sea strategy.
- The 59th ASEAN Foreign Ministers' Meeting is scheduled for July 21, 2026, where the Philippines, as ASEAN chair, may push for firmer language respecting UNCLOS legal processes without directly naming the 2016 award.
- A Code of Conduct between ASEAN and China, with a 2026 deadline set in a 2023 agreement, faces an impasse because Beijing rejects any linkage to the 2016 ruling while Manila insists on its legal principles.
- Wu Shicun, chair of the Huayang Center for Maritime Cooperation and Ocean Governance, argues the COC is unlikely to be finalized during the Philippines' chairmanship given the ongoing disagreement.
Why it matters: ASEAN's continued silence on a binding international ruling signals to smaller states that powerful neighbors can ignore legal outcomes without consequence, eroding the credibility of the rules-based order the bloc claims to champion. With the Philippines holding the 2026 chair and the 59th AMM set for July 21, the 10th anniversary is the most visible test yet of whether consensus-based diplomacy can produce even indirect affirmation of international law.
