The Biden administration has reaffirmed the U.S. commitment to its treaty allies—the Philippines, Japan, South Korea, and Australia—while deepening security ties with Vietnam and Malaysia. The pact (Australia, U.K., U.S.) and intensified joint naval drills are signals that Washington will not cede strategic control of the sea lanes.
Crucially, the sea is also a vital fishing ground, providing protein and income for tens of millions of people across the region. For nations like Vietnam and the Philippines, access to these waters is not just an economic issue; it is a matter of food security and rural employment. At the heart of the tension lies a complex web of overlapping territorial claims. The primary claimants—China, Vietnam, the Philippines, Malaysia, Brunei, and Taiwan—assert rights based on historical maps, proximity, or the United Nations Convention on the Law of the Sea (UNCLOS). south china sea
In a landmark 2016 ruling, the Permanent Court of Arbitration in The Hague rejected China’s claims, stating that there was “no legal basis” for China to claim historic rights to resources within the nine-dash line. The court also ruled that certain features claimed by China, such as Mischief Reef, are rocks that do not generate a full EEZ. China has refused to recognize the ruling, insisting on bilateral negotiations rather than multilateral or international legal mechanisms. Since the early 2010s, China has transformed its presence in the region through a massive land-reclamation and construction program. Previously uninhabitable reefs and shoals have been converted into artificial islands with runways long enough for fighter jets, radar installations, anti-aircraft missile batteries, and deep-water harbors. The Biden administration has reaffirmed the U
The most contentious element is China’s claim, known as the This sweeping demarcation, originally drawn in 1947, encompasses nearly 90% of the South China Sea, including waters within 200 nautical miles of the coasts of Vietnam and the Philippines. Critics argue that the line has no basis in international law, as it claims entire archipelagos and vast expanses of high seas, ignoring the exclusive economic zones (EEZs) of other coastal states. Crucially, the sea is also a vital fishing
By J. Harper, Strategic Affairs Correspondent
