China Has Been Practicing Taiwan’s Strangulation for Years.
The drills, the drones, the coast guard boardings, none of it is new. That’s the point.
The propaganda video runs just under two minutes. A PLA officer, standing on a set designed to look like an aircraft carrier deck, speaks directly to camera. His message is unhurried and specific: if Taiwan loses its maritime supply lines, its resources will be depleted, social order will collapse, and people’s livelihoods will be “severely impacted.” The video was released publicly. Beijing wanted views.
That was April 2025. The exercises that framed the video, Strait Thunder-2025A (a name whose alphabetical suffix implied a sequel) deployed 38 naval vessels around Taiwan, practiced bombing ports and energy facilities, and introduced a new phase of Chinese military pressure that did not look like an invasion at all. It looked like preparation for something more patient.
The difference matters. Amphibious invasions require contested beaches, landing craft, casualties, and the kind of unambiguous aggression that compels international response. What China has been rehearsing instead is a grey-zone quarantine: the methodical, layered, legally ambiguous economic encirclement of a democracy of 23 million people. The exercises are not saber-rattling. They are a curriculum.
WHAT STRAIT THUNDER-2025A REHEARSED
- Bombing of ports and energy supply infrastructure.
- Full and partial naval blockade of Taiwan’s shipping lanes.
- Coast guard, navy, and maritime militia deployed in coordinated cabbage strategy layers.
- Strikes on pro-independence political figures, per PLA official statements.
- Interdiction of foreign forces attempting to intervene.
The cabbage strategy (named for the way successive leaves wrap around a core) is the operational concept connecting every element of the grey-zone playbook. Chinese coast guard vessels, naval warships, and maritime militia boats on requisitioned fishing craft deploy in concentric rings around Taiwan or its outlying islands. Each ring is individually justifiable. Each can be framed as a routine exercise, a law enforcement patrol, a safety inspection. Collectively they create a perimeter no commercial vessel can breach without Chinese approval.
This is not hypothetical. China has already tested it at small scale. Its coast guard boarded a Taiwanese tourist vessel. It inspected Taiwanese fishing boats near restricted waters. A Chinese cargo ship captain was prosecuted in 2025 for deliberately dragging his anchor to sever an undersea communications cable serving Taiwan. These are not rogue incidents. They are the proof-of-concept phase of a doctrine that has been operationalized.
“If Taiwan loses its maritime supply lines, its domestic resources will quickly be depleted, social order will fall into chaos and people’s livelihoods will be severely impacted.”
The December 2025 exercises refined the playbook further. They included long-range rocket fire, blockade simulations, interdiction rehearsals for foreign military forces, and — in the detail that most alarmed Taiwan’s defense ministry — practice strikes on what Chinese officials called pro-independence figures. Taiwan’s leadership is already on the target list.
What separates a quarantine from a blockade, legally and strategically, is the difference between domestic law enforcement and an act of war. A quarantine — led by the coast guard, framed as customs verification, calibrated to restrict some shipping while allowing other categories to pass — exists in the grey between those definitions. It is designed to stay there long enough to do irreversible damage before anyone can agree on what to call it.
Beijing has spent years building the coast guard fleet that makes this distinction operationally viable. China’s maritime law enforcement forces now outnumber Taiwan’s entire navy. They have been equipped, trained, and positioned for exactly the kind of at-sea operations the Strait Thunder exercises have rehearsed. The rehearsal is over. What comes next is the performance.
