Not Welcome at the Scarborough Shoal: China's Floating Showcase

 “The conqueror shall always endeavour to add to his own power and to weaken   that of the enemy."   - Kautilya, Arthashastra, Book VI

In April 2026, the world witnessed another display of unapologetic power when the Dragon decided to cloak the mouth of the Scarborough Shoal with fleeting barriers and ships. What comes as a shock is how this act contradicts the UNCLOS and the Permanent Court of Arbitration's ruling that the shoal is well within the Philippines' Exclusive Economic Zone. Therefore, what one needs to understand here is whether a rules-based international order can even survive with a great-power hungry aspirant or not.

Illustration by The Geostrata

SITUATING THE IMPORTANCE OF THE INDO-PACIFIC

Tim Marshall, in Prisoners of Geography, opens with a speciously simple argument. He claims that the physical features like rivers, mountains, coastlines, and chokepoints, shape the decisions of leaders more than ideology or intention ever can. "To understand the news," Marshall writes, "is to understand geography." Nowhere is this more viscerally true than in the South China Sea.

The emerging world order has consistently demonstrated that sea routes are strategic locations, utilised to reshape the power dynamics of trade, communication, and hegemony in the 21st century. This holds true for the South China Sea and broader Indo-Pacific. Over three trillion dollars in maritime trade transits the South China Sea annually, making up roughly one-third of global trade.

  Own this route, own Asia

The numbers underscore the stakes.  For India, half its foreign trade passes through the Strait of Malacca, and 95 per cent of its trade by volume moves through Indian Ocean sea lanes that China's growing naval footprint is quietly encircling. When Beijing consolidates control over this geography, it is not abstract. It lands in the quiet strangulation of economic autonomy, in supply chain disruptions and in Indian household energy costs. What New Delhi needs is a coherent maritime strategy to contest Chinese expansion in waters it calls its own backyard.

THE STORY OF SLOW ANNEXATION: SCARBOROUGH SHOAL

Scarborough Shoal, also known as Huangyan Island in China, is a triangular coral atoll spread 220 kilometres west of Luzon and well within the recognised Filipino Exclusive Economic Zone (EEZ). It has traditionally served as a communal fishing ground for Filipino, Chinese, and Vietnamese fishermen. Since 2012, however, it has become a site of contestation.

Following a naval standoff against the Philippines in 2012, China seized effective control of the shoal and deployed the China Coast Guard to restrict access to the lagoon entrance. There have been many instances where floating barriers, water cannons directed at the Philippine coast guard and fishing vessels, and nexus with maritime militia vessels have been utilised by Beijing. The most recent escalation that came to light from April 10 and 11 satellite imagery revealed four Chinese fishing vessels, a probable naval or coast guard ship, and a newly installed floating barrier across the lagoon mouth.

This was corroborated by the Philippine Coast Guard spokesman, Commodore Jay Tarriela, who informed the media that six Chinese maritime militia ships were spotted within the shoal, while three others took up blockading positions outside. In addition, ten coast guard ships of China were spotted by the Philippine navy in the area from April 5 to April 12.

This is not a one-off incident and is best explained by Hans Morgenthau in Politics Among Nations. He argued that international law without enforcement is not law but aspiration. Legal victories without the power to enforce them are not victories; they are demonstrations of institutional impotence.

The Philippines has the strongest possible legal case. affirmed by the 2016 Permanent Court of Arbitration ruling that China's nine-dash line has no legal basis under UNCLOS  and has lost decisively on the water. The ruling confirmed China's violation of Philippine sovereignty and its interference with Filipino fishing rights. China's response was to declare it 'null and void' and continue.

This is the core of Morgenthau's critique: moral and legal arguments in international politics function as rationalisations for interest, not constraints upon it. When a state has the power to ignore international rulings without cost, it surely will. The enforcement gap between legal instruments and physical reality is not a bug in the international system. According to classical realism, it is the real system.

THE STAKEHOLDER'S DILEMMA

The Philippines occupies the most exposed position in this contest, functioning as the frontline state against China's incremental territorial aspirations. Since President Ferdinand Marcos Jr. took office, Manila has shown a pivot towards Washington, deepening its alliance and publicly escorting its fishing fleets with guard vessels. Moreover, there have been many joint maritime exercises conducted at Scarborough Shoal and the broader Balikatan drills involving Australia and Japan, reflecting a strategic calculation.

The message is to emphasise multilateral visibility, as it is a more effective deterrent than quiet diplomacy. Yet the Philippines continues to remain structurally vulnerable, even with its legal victories at international platforms. The uncomfortable question one is bound to ask is thus, At what point does the Philippines' continued reliance on a multilateral framework that has demonstrably failed to restore its legal rights become not a principled stand, but a strategic miscalculation?

The United States ' engagement in the South China Sea is anchored in both alliance obligation and order-maintenance interests. For its part, it has maintained a program of freedom of navigation operations (FONOPs) in the South China Sea to challenge China’s excessive maritime claims by sailing warships through waters that Beijing contends to be its own. Through this, the United States projects its commitment to Philippine security.

However, its failure to ratify UNCLOS, the very legal framework it champions, undermines its normative credibility and provides Beijing with a readily deployable diplomatic counterargument. It would not be wrong to say that American influence in the region rests more on military deterrence and alliance architecture than on a solid legal standing, making a sustained stance ineffective.

Japan is another overlooked stakeholder in the South China Sea conundrum. However, its challenges are fundamentally economic before they are military. Its energy imports and critical supply chains transit the very lanes that China's coast guard is increasingly bringing under administrative control. This is a material vulnerability getting translated into an accelerating security posture.

A clear instance can be seen from the Japanese warships now regularly transiting the Taiwan Strait and Tokyo participating in joint maritime drills alongside the United States and the Philippines. More recently, it has also announced a joint frigate programme with Australia. Japan's involvement in the Quad has further institutionalised its alignment with a commitment to a 'free and open Indo-Pacific,' marking a significant departure from its historically cautious approach to power projection in the region.

WHAT IS IT REALLY?

The question that haunts every analysis of the South China Sea is, therefore, what happens if China succeeds? The answer is not a war. Wars can be resisted, negotiated, and ended. What we see in the case of China is a classic case of Asymmetry, where China deploys a coordinated system of coast guard ships and maritime militia vessels and declares areas ‘nature reserves’ to assert control from all angles and not just military force. Its opponents respond through legal argumentation, joint exercises, and arms transfers. Sadly, these instruments register protests but do not change facts on the water. The Scarborough Shoal embodies this asymmetry.

China is not defying the rules-based international order. It is demonstrating, subtly, that the order does not apply to states with sufficient power to ignore it.

Scarborough Shoal, in this reading, is not a dispute. It is a classroom where the lesson being taught is that the Matsyanyaya endures. The big fish eat the small ones. The only difference between Kautilya's fourth century BCE and our twenty-first century CE is that we have built elaborate institutions to tell ourselves otherwise.

Scarborough Shoal functions as a diagnostic moment for the Indo-Pacific order. It reveals not only the limits of legal instruments against grey-zone coercion, but also the limitation of degree, up to which shared principles can translate into action. The challenge for the Philippines, the United States, Japan, and their partners is to move beyond reactive protests. What the contenders need is a strategy that structurally raises the price of China's incremental expansionism.  They need a coherent coalition that has sustained to alter the course of history. This will ultimately become the central geopolitical question defining this decade. However, how this unfolds, only time can tell.

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BY RIYA PANDEY

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