What Is Lawfare? China’s Legal Warfare Against Taiwan, Explained

WarBrief Live | October 20, 2026 | Geopolitics Explained

So what is lawfare — and why is a top US official warning that China’s coast guard patrols east of Taiwan are its latest weapon? On October 20, 2026, Randall Schriver, the chair of the US Congress-appointed US-China Economic and Security Review Commission, told a forum in Taipei that Beijing’s persistent coast guard patrols east of Taiwan are “an extension of legal warfare and political and information warfare” and “highly destabilising” if China keeps operationalising them. Lawfare is the use of legal systems, laws and legal claims as a tool of conflict — and in the Taiwan Strait it has become one of Beijing’s sharpest non-kinetic instruments.

What is lawfare?

Lawfare is the use of legal instruments — national laws, international law, legal institutions and the language of law itself — to achieve political or strategic objectives against an adversary. Western scholars describe it as the use of law “to secure legal principle superiority and delegitimise an adversary,” while Chinese military literature frames it more directly: yifa zhidi — “controlling the enemy through the law, or using the law to constrain the enemy.”

Chinese sources identify a practical lawfare toolkit: legal deterrence, legal attack, legal counterattack, legal binding and legal protection. In practice this means passing domestic laws that claim authority beyond one’s borders, issuing official “legal opinions” on maritime disputes, using courts and sanctions lists against foreign nationals, and deploying coast guard vessels to perform “law enforcement” in contested waters — each act creating a paper trail and a “fact on the ground” that later arguments can cite.

Crucially, lawfare is rarely used alone. It is one of the three warfares in Chinese military doctrine: public opinion warfare (shaping how the world sees the dispute), psychological warfare (shaping the adversary’s will to resist), and legal warfare (shaping the legal terrain). Analysts treat the three as synergistic — one system of non-kinetic warfare designed to change the status quo in peacetime, long before any shot is fired.

How does China’s legal warfare work in the Taiwan Strait?

In the Taiwan Strait, Beijing’s legal warfare has four visible moving parts. First, reinterpretation of UN General Assembly Resolution 2758 (1971). That resolution transferred China’s UN seat from Taipei to Beijing — but scholars and US analysts note it addressed UN representation, not sovereignty, and said nothing about Taiwan’s international legal status. Beijing, however, repeatedly cites it as the legal basis for treating Taiwan as part of China, and law professor Julian Ku has warned that the steady drumbeat of “province of China” references in legal documents and state media is designed to normalise the claim.

Second, domestic legislation with extraterritorial reach. In July 2026, China’s Law on Promoting Ethnic Unity and Progress took effect, requiring Chinese nationals to uphold “national unification” and exposing people or organisations inside or outside China to legal liability for harming “ethnic unity.” Taiwanese President Lai Ching-te called it an “evil law” and warned it opens the door to cross-border pressure on Taiwanese society — a domestic statute deployed as a strategic weapon.

Third, coast guard “law enforcement” as territorial claim-making. Taiwan’s Mainland Affairs Council says Beijing is using coast guard patrols, rather than military force, to manufacture a de facto claim over the waters around Taiwan — harassing commercial ships by demanding their origin and destination and claiming jurisdiction, in what Taipei calls “repeating an illegal act” in the hope repetition will eventually be treated as lawful. On October 18, Taiwan’s coast guard drove away 16 Chinese vessels in what local media called an act of “hybrid warfare,” and the patrols are now described as routine.

Fourth, lawfare as transnational repression. A June 2026 report from the US Congressional-Executive Commission on China documented how Beijing has layered lawfare into its broader Taiwan strategy — including the criminal investigation of a sitting Taiwanese lawmaker, Puma Shen, under guidelines punishing what Beijing calls “obstinate Taiwan independence” advocates. Sanctions lists became criminal cases; administrative pressure became prosecution.

Why did a top US official call China’s east-Taiwan patrols “legal warfare”?

Randall Schriver’s October 20 warning landed because the patrols east of Taiwan are new — and legally pointed. China stepped up activity off Taiwan’s east coast in June 2026 with regular coast guard patrols, and Taiwanese officials believe Beijing is practising for a possible maritime blockade using overlapping military, paramilitary and civilian assets. A coast guard vessel, Schriver argued, looks benign — ostensibly civilian, performing law enforcement — but “in fact it is an extension of China’s sovereignty claim.”

That is the core of the lawfare argument: who patrols matters less than what the patrolling claims. A navy warship is a military threat; a coast guard cutter is a policeman. Police enforce laws, and laws imply jurisdiction. Every patrol that goes unchallenged becomes evidence, in Beijing’s telling, that the waters are Chinese — which is exactly what China’s foreign ministry said: those waters are Chinese, so “it was therefore legitimate, lawful and beyond reproach for China to carry out activities” there. Taiwan’s National Security Council Secretary-General Joseph Wu countered at the same forum that China has no legal claim to the waters off the island’s east.

The same day, Taiwan’s defence ministry reported another “joint combat readiness patrol” with 27 military aircraft, including nuclear-capable H-6 bombers. The pattern — civilian-legal cover on the water, military muscle in the air — is precisely the overlapping-assets approach Taipei says looks like blockade practice. For context on the coast guard dynamic, see our earlier coverage of Taiwan’s “second navy”, and for the wider military pressure, China’s October live-fire drills around Taiwan.

Figures above are confirmed by official statements as reported by Reuters on October 20, 2026. Operational claims from either side that appear in only one outlet should be treated as reported, not confirmed.

What China’s legal warfare means for US/UK/EU readers

For readers far from the Strait, lawfare matters because it is the mechanism by which a crisis could arrive without a formal declaration of war. A “quarantine” enforced by coast guard cutters citing domestic law looks very different from a naval blockade — and international law treats it differently. Shipping insurers, airlines and commodity markets price risk on precisely these ambiguities: the Strait carries a significant share of global container traffic, and Taiwan produces the overwhelming majority of the world’s most advanced semiconductors. A legal-grey-zone squeeze on Taiwan’s ports would ripple into electronics prices, auto supply chains and shipping costs in the US, UK and EU long before any shots were fired.

It also matters diplomatically. Beijing’s reinterpretation of Resolution 2758 is aimed at international institutions, courts and companies: every airline, map publisher and multinational that adopts “Taiwan, Province of China” wording is, knowingly or not, participating in the legal-warfare campaign. Washington’s counter-position — visible in Schriver’s forum remarks and the CECC’s reporting — is that the resolution settled UN representation, not Taiwan’s status. That legal contest is one reason the Trump administration’s arms-sale decisions carry unusual weight: after approving $11 billion in December, the president has held back a further $14 billion package, calling it in May a “very good negotiating chip” — and Schriver indicated movement is unlikely before next year, with Trump and Xi expected to meet at the APEC summit in China and the G20 in Florida.

For the broader Indo-Pacific picture, see our evergreen analysis of naval dominance in the Indo-Pacific and the conflict zones and country profiles hubs.

What could lawfare look like next in the Taiwan Strait?

Watch for three escalation paths. First, the patrols east of Taiwan becoming declared and routine — the moment Beijing announces a standing “law enforcement” presence, it converts an incursion into an institution, making each future patrol harder for Taipei and Washington to contest without appearing escalatory themselves.

Second, legal targeting of individuals and companies — the Puma Shen precedent suggests criminal investigations and sanctions lists will expand from politicians to academics, businesspeople and foreign firms operating in Taiwan, following the pattern the CECC documented.

Third, a coast-guard-led quarantine framed as customs or safety enforcement — the scenario Taiwan’s officials already describe as blockade practice. If Beijing ever stops merchant traffic “for inspections” under domestic law, the world will face a blockade wearing a policeman’s uniform, and the legal arguments rehearsed over Resolution 2758 will be the justification.

Schriver’s intervention suggests Washington is done treating these moves as background noise. Whether Congress turns that recognition into faster arms deliveries or new counter-lawfare legislation will shape how much of the legal terrain Beijing can capture unopposed.

Frequently asked questions

What is lawfare in simple terms?
Lawfare is using law as a weapon in a conflict: passing or reinterpreting laws, using courts and legal claims, or deploying “law enforcement” assets to gain a strategic advantage over an adversary — often without using military force.

What are China’s “three warfares”?
The “three warfares” are public opinion warfare, psychological warfare and legal warfare — a Chinese military doctrine that treats shaping narratives, shaping the adversary’s will, and shaping the legal terrain as synergistic components of non-kinetic conflict.

How is China using lawfare against Taiwan?
Beijing reinterprets UN Resolution 2758 as establishing sovereignty over Taiwan, passes domestic laws with extraterritorial reach, uses coast guard “law enforcement” patrols to manufacture maritime claims, and pursues criminal cases against Taiwanese figures under secession guidelines.

Why did a US official call China’s coast guard patrols “legal warfare”?
On October 20, 2026, USCC chair Randall Schriver said China’s persistent coast guard patrols east of Taiwan are “an extension of legal warfare and political and information warfare” because they dress a sovereignty claim in civilian law-enforcement clothing, making the claim harder to challenge.

What does UN Resolution 2758 actually say about Taiwan?
Resolution 2758 (1971) transferred China’s UN seat from Taipei to Beijing. Scholars and US analysts note it addressed UN representation, not sovereignty — it did not determine Taiwan’s international legal status, though Beijing cites it as doing so.

Sources

• Reuters via SRN News: Chinese patrols to Taiwan’s east are ‘destabilising’, US Congress-appointed official says (Oct 20, 2026)
• Archynetys: ‘Hybrid warfare’ — Taiwan drives away 16 Chinese ships (Oct 20, 2026)
• ORF: Taiwan and Beyond — China’s Multi-Front Maritime Lawfare
• HCSS: Reshaping the International Legal Order — Chinese Lawfare (2026)
• The China Quarterly (Cambridge): Reunifying Taiwan with China through Cross-Strait Lawfare
• Focus Taiwan (CNA): China integrating lawfare into broader Taiwan strategy — U.S. report (Jun 4, 2026)
• Medill on the Hill: China’s “lawfare” campaign threatens to marginalize Taiwan (Feb 2026)