Over the past decade, the South China Sea has become one of the most volatile flash points in East Asia. China, Vietnam, the Philippines, Malaysia, Brunei and Taiwan each assert sovereignty over part or all of the sea, and these overlapping claims have led to diplomatic and even military standoffs in recent years.
Because the sea hosts numerous island chains, is rich in mineral and energy resources and has nearly a third of the world’s maritime shipping pass through its waters, its strategic value to these countries is obvious. For China, however, control over the South China Sea is more than just a practical matter and goes to the center of Beijing’s foreign policy dilemma: How to assert its historical maritime claims while maintaining the nonconfrontational foreign policy established by former Chinese leader Deng Xiaoping in 1980.
China staked its modern claim to control of the sea in the waning days of the Chinese civil war. Since most of the other claimant countries were occupied with their own independence movements in the ensuing decades, China had to do little to secure this claim. However, with other countries building up their maritime forces, pursuing new relationships and taking a more active stance in exploring and patrolling the waters, and with the Chinese public hostile to any real or perceived territorial concessions on Beijing’s part, Deng’s quiet approach is no longer an option.
China is a vast continental power, but it also controls a long coastline, stretching at one time from the Sea of Japan in the northeast to the Gulf of Tonkin in the south. Despite this extensive coastline, China’s focus has nearly always turned inward, with only sporadic efforts put toward seafaring and even then only during times of relative security on land.
Traditionally, the biggest threats to China were not from sea, except for occasional piracy, but rather from internal competition and nomadic forces to the north and west. China’s geographic challenges encouraged a family-based, insular, agricultural economy, one with a strong hierarchal power structure designed in part to mitigate the constant challenges from warlords and regional divisions.
Much of China’s trade with the world was undertaken via land routes or carried out by Arabs and other foreign merchants at select coastal locations. In general, the Chinese chose to concentrate on the stability of the population and land borders over potential opportunities from maritime trade or exploration, particularly since sustained foreign contact could bring as much trouble as benefit.
To understand China’s present-day maritime logic and its territorial disputes with its neighbors, it is necessary to first understand the so-called nine-dash line, a loose boundary line demarcating China’s maritime claims in the South China Sea.
The nine-dash line was based on an earlier territorial claim known as the eleven-dash line, drawn up in 1947 by the then-ruling Kuomintang government without much strategic consideration since the regime was busy dealing with the aftermath of the Japanese occupation of China and the ongoing civil war with the Communists.
After the end of the Japanese occupation, the Kuomintang government sent naval officers and survey teams through the South China Sea to map the various islands and islets. The Internal Affairs Ministry published a map with an eleven-dash line enclosing most of the South China Sea far from China’s shores.
This map, despite its lack of specific coordinates, became the foundation of China’s modern claims, and following the 1949 founding of the People’s Republic of China, the map was adopted by the new government in Beijing. In 1953, perhaps as a way to mitigate conflict with neighboring Vietnam, the current nine-dash line emerged when Beijing eliminated two of the dashes.
The new Chinese map was met with little resistance or complaint by neighboring countries, many of which were then focused on their own national independence movements. Beijing interpreted this silence as acquiescence by the neighbors and the international community, and then stayed largely quiet on the issue to avoid drawing challenges. Beijing has shied away from officially claiming the line itself as an inviolable border, and it is not internationally recognized, though China regards the nine-dash line as the historical basis for its maritime claims.
Like other claimant countries such as Vietnam and the Philippines, China’s long-term goal is to use its growing naval capabilities to control the islands and islets within the South China Sea and thus the natural resources and the strategic position they afford.
Meanwhile, to avoid dealing with a unified bloc of counterclaimants, Beijing adopted a one-to-one negotiation approach with individual countries on their own territorial claims, without the need to jeopardize its entire nine-dash line claim. This allowed Beijing to remain the dominant partner in bilateral negotiations, something it feared it would lose in a more multilateral forum.
Despite the lack of legal recognition for the nine-dash line and the constant friction it engenders, Beijing has little ability now to move away from the claim. With the rising international attention and regional competition over the South China Sea, the Chinese public — which identifies the waters within the nine-dash line as territorial waters — is pressuring Beijing to take more assertive actions.
This has left China in an impossible position: When Beijing attempts to portray joint developments as evidence that other countries recognize China’s territorial claims, the partner countries balk; when it tries to downplay the claims in order to manage international relations, the Chinese population protests (and in the case of Chinese fishermen, often act on their own in disputed territory, forcing the government to support them rhetorically and at times physically). Any effort to appeal to Beijing’s domestic constituency would risk aggravating foreign partners, or vice versa.
The complications from the nine-dash line, the status of domestic Chinese developments and the shifting international system have all contributed to shape China’s evolving maritime strategy.
Under former leader Mao Zedong, China was internally focused and constrained by a weak navy. China’s maritime claims were left vague, Beijing did not aggressively seek to assert its rights and the independence struggles of neighboring countries largely spared China from taking a stronger maritime stance. China’s naval development remained defensive, focused on protecting its shores from invasion. Deng Xiaoping, in concert with his domestic economic reforms in the late 1970s and early 1980s, sought the more pragmatic joint economic development of the East and South China seas, putting aside claims of territorial sovereignty for another time. China’s military expenditures continued to focus on land forces (and missile forces), with the navy relegated to a largely defensive role operating only in Chinese coastal waters.
- The article was written for InDepthNews












