Sea and Sky: Lawfare at China’s Edges
Gray-zone governance at sea: the 2021 Coast Guard Law, maritime militia, and new maps assert claims. China rejects the 2016 Hague ruling on the South China Sea, builds bases, and sets rules to police foreign ships near reefs and shoals.
Episode Narrative
In the vast expanse of the South China Sea, history weaves a complex narrative of power, ambition, and conflict. It is a body of water rich in resources and strategic importance, a battlefield not just of ships, but of ideologies. Here, the laws of the sea can clash with the interests of nations, creating a storm of geopolitical tensions. At the heart of this struggle lies China's Coast Guard Law, enacted in January 2021. This legislation was not merely a regulatory framework; it represented a significant escalation in China's legal posture at sea.
The law grants China's maritime forces unprecedented authority to use "all necessary means" against foreign vessels deemed to be infringing upon Chinese sovereignty. This alarming new power, which includes the potential use of lethal force, is a striking illustration of how law can be wielded as a weapon, softening the lines between legal governance and military aggression. With its Coast Guard given such latitude, the waters of the South China Sea transformed into a battleground governed by the whims of national legislation.
The origins of this legal warfare can be traced back to the 2016 Hague ruling, which invalidated China’s sweeping claims over the South China Sea. That ruling was dismissed by Beijing as “null and void,” igniting a journey into a new era of assertiveness. In the wake of this decision, China accelerated its efforts to secure its claims through updated maps and aggressive legislation. The Coast Guard Law was just one piece of a broader strategy aimed at consolidating control over a region critical to its national interests.
It is crucial to understand this context as we observe China’s maritime militia, often masquerading as civilian fishing fleets. These vessels operate under a gray-zone strategy, a tactic that complicates international legal responses and blurs the lines between law enforcement and military action. Within this framework, China has not only expanded its legal reach but has also fortified its maritime presence, constructing artificial islands and military bases that challenge established norms.
The geopolitical game intensified in 2022 when China issued new official maps that further expanded its territorial claims, solidifying the controversial "nine-dash line." This claim, now enshrined in domestic law, runs counter to the United Nations Convention on the Law of the Sea. Such actions are emblematic of a troubling trend where national sovereignty takes precedence over international law, creating a precarious situation for neighboring nations.
The implications of the Coast Guard Law extend beyond mere legal text. It allows for the boarding, inspection, and search of foreign vessels within waters claimed by China, including their Exclusive Economic Zones. This has led to numerous confrontations with vessels from the Philippines, Vietnam, and Malaysia, among others, often with the 2021 law cited as justification for aggressive maneuvers. Operations not only involving the Coast Guard but also joint missions with the People’s Liberation Army Navy blur the boundaries of military engagement and law enforcement.
As tensions escalate, the law has facilitated the detaining of foreign fishing vessels and personnel, casting a dark shadow over the freedoms of navigation that many nations hold dear. Such assertions of power have been condemned by international legal experts as violations of UNCLOS, a framework designed to promote cooperation at sea. Yet, China remains firm in its stance, asserting its actions as legitimate exercises of sovereignty.
The law’s provisions allow for the prosecution of foreign nationals under Chinese criminal law for offenses such as “illegal fishing” or “trespassing” within disputed waters. The potential for lengthy prison sentences sends a chilling message, reinforcing a sense of insecurity for those navigating these waters. The gray realities of maritime law slip further into the murky depths as fears of excessive force loom large, evidenced by reports detailing the use of water cannons and ramming against foreign vessels.
This new era of maritime assertiveness has been a turning point in regional dynamics, easily cited as a key factor in the escalating tensions of the South China Sea. Diplomatic protests from affected nations have become commonplace, showcasing a growing rift between China and its neighbors. Each incident at sea reverberates through the corridors of power, where leaders must navigate the treacherous waters of diplomacy and military might.
In many ways, this unfolding drama serves as a microcosm of the greater battle for influence in the Indo-Pacific region. With every maneuver, every law enacted, we witness how legal frameworks and military strategies intertwine. As the storm brews, the question arises: what will the future hold for the South China Sea? Will international norms eventually gain the upper hand, or will power dynamics reshape the maritime landscape?
The conflict over the South China Sea is not merely a story of nations battling for resources; it is a reflection of humanity’s broader quest for legitimacy, power, and sovereignty. This is a tale with many authors, where every wave carries the weight of history and every confrontation echoes the struggles of past and present. As we look to the horizon, one thing is clear: the sea remains a stage for lawfare, where might and right dance an intricate waltz, leaving nations to ponder the costs of ambition against the backdrop of the vast and relentless ocean.
Highlights
- In 2021, China enacted the Coast Guard Law, granting its maritime forces authority to use force against foreign vessels in disputed waters, including the South China Sea, and to expel or detain ships deemed to be violating Chinese laws near reefs and shoals. - China’s Coast Guard Law explicitly authorizes the use of “all necessary means,” including weapons, to enforce maritime claims, marking a significant escalation in its legal posture at sea. - The 2016 Hague ruling, which invalidated China’s expansive South China Sea claims, was rejected by Beijing as “null and void,” and China has since intensified its legal and physical assertion of sovereignty through new maps and legislation. - China’s maritime militia, often described as “civilian” fishing fleets, operates under a gray-zone strategy, blending law enforcement and military functions to assert control without overt military action, a tactic that complicates international legal responses. - In 2022, China released new official maps that further expanded its territorial claims in the South China Sea, including the controversial “nine-dash line,” and incorporated these claims into domestic law, challenging the United Nations Convention on the Law of the Sea (UNCLOS). - China’s Coast Guard Law allows for the detention of foreign vessels and personnel, with the potential for criminal prosecution under Chinese law, even in areas where sovereignty is contested. - The law grants China’s Coast Guard the power to conduct boarding, inspection, and search operations on foreign ships in waters claimed by China, including within the Exclusive Economic Zones (EEZs) of other nations. - China’s legal framework for maritime governance increasingly emphasizes “sovereignty and security” over international legal norms, reflecting a broader trend of legal assertiveness in foreign policy. - The Coast Guard Law was passed in January 2021, with immediate effect, and has been used to justify the detention of foreign fishing vessels and the expulsion of foreign naval ships from disputed waters. - China’s Coast Guard has been involved in numerous incidents with foreign vessels, including the Philippines, Vietnam, and Malaysia, often citing the 2021 law as justification for its actions. - The law allows for the use of force against foreign vessels that “refuse to leave” or “resist inspection,” with the potential for lethal force in extreme cases. - China’s Coast Guard Law has been criticized by international legal experts as a violation of UNCLOS and a threat to freedom of navigation, but Beijing maintains that it is acting within its sovereign rights. - The law also grants China’s Coast Guard the authority to conduct joint operations with the People’s Liberation Army Navy, blurring the lines between law enforcement and military action. - China’s Coast Guard Law has been used to justify the construction of artificial islands and military bases in the South China Sea, which are now considered part of China’s “territorial sea” under domestic law. - The law allows for the prosecution of foreign nationals under Chinese criminal law for activities such as “illegal fishing” or “trespassing” in disputed waters, with the potential for lengthy prison sentences. - China’s Coast Guard Law has been used to justify the detention of foreign fishing vessels and the expulsion of foreign naval ships from disputed waters, often resulting in diplomatic protests from affected nations. - The law grants China’s Coast Guard the authority to conduct boarding, inspection, and search operations on foreign ships in waters claimed by China, including within the EEZs of other nations, a move that has been criticized as a violation of international law. - China’s Coast Guard Law has been used to justify the use of force against foreign vessels, including the use of water cannons and ramming, in disputed waters, often resulting in diplomatic tensions. - The law allows for the prosecution of foreign nationals under Chinese criminal law for activities such as “illegal fishing” or “trespassing” in disputed waters, with the potential for lengthy prison sentences, a move that has been criticized as a violation of international law. - China’s Coast Guard Law has been used to justify the detention of foreign fishing vessels and the expulsion of foreign naval ships from disputed waters, often resulting in diplomatic protests from affected nations, and has been cited as a key factor in the escalation of tensions in the South China Sea.
Sources
- https://www.degruyterbrill.com/document/doi/10.1515/ijld-2025-2008/html
- http://journal-app.uzhnu.edu.ua/article/view/334210
- https://muse.jhu.edu/article/969169
- https://www.tandfonline.com/doi/full/10.1080/07900627.2025.2487663
- https://journalajess.com/index.php/AJESS/article/view/2037
- https://dl.acm.org/doi/10.1145/3706599.3719961
- http://jospl.org/journal/view.php?doi=10.63563/jspl.2025.017
- https://internationalpublisher.id/journal/index.php/Nejesh/article/view/259
- https://www.chndoi.org/Resolution/Handler?doi=10.19540/j.cnki.cjcmm.20250416.601
- https://www.journal-uamd.org/index.php/IJRD/article/view/573