The Association of Southeast Asian Nations faces structural paralysis in mitigating South China Sea territorial disputes due to internal division among its ten member states and persistent diplomatic pressure from Beijing. Four member nations—Vietnam, Malaysia, the Philippines, and Brunei—maintain overlapping sovereignty claims in the Spratly and Paracel Islands against China's extensive nine-dash line claims.
Consensus decision-making limits bloc action. While individual states ratified the 1982 United Nations Convention on the Law of the Sea to establish exclusive economic zones, regional conflict resolution mechanisms remain non-binding. The 2002 Declaration on the Conduct of Parties lacks enforcement provisions, and negotiations for a binding Code of Conduct have stalled since 1999. Non-claimant ASEAN states prioritize bilateral economic ties with China over collective regional security guarantees. Consequently, Beijing leverages consensus requirements within the regional organization to prevent a unified diplomatic front, leaving claimant states dependent on fragmented bilateral negotiations and unilateral maritime strategies.