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.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. south china sea
Stretching over 3.5 million square kilometers from the straits of Taiwan and Malacca to the busy ports of Vietnam and the Philippines, the South China Sea is far more than a body of water. It is a geopolitical fulcrum, an economic artery, and a growing flashpoint for great-power competition. For the nations that border it—Brunei, China, Indonesia, Malaysia, the Philippines, Taiwan, and Vietnam—the sea represents national livelihood, historical heritage, and strategic depth. For the rest of the world, particularly the United States and its allies, it is a test case for the future of the international rules-based order. To understand the stakes, one must first look at the sheer volume of commerce that transits these waters. Approximately one-third of global shipping passes through the South China Sea each year, carrying over $3 trillion in trade. From oil and liquefied natural gas from the Middle East to manufactured goods from China and electronics from Southeast Asia, the sea is the world’s busiest maritime corridor. In a landmark 2016 ruling, the Permanent Court