On September 29 the China Coast Guard announced that a task group led by the cutter Zhujiajian had carried out “routine law-enforcement patrols” in the waters east of Taiwan. The announcement added a detail that matters more than the patrol itself. The group, Beijing said, had been “strengthening control” over those waters since the start of September.

Taiwan’s coast guard had been watching. Its cutter Lanyu shadowed two Chinese ships, the Zhujiajian (hull 2503) and the Chongming (1401), and placed them roughly 97 nautical miles northeast of Green Island and 146 nautical miles east of Lanyu. Far from the Strait. Far from Fujian. On the Pacific side of the island, where Taiwan’s east-coast ports and air bases face open water.

President Lai Ching-te speaks in front of the Presidential Office in Taipei on Saturday, October 10, for Taiwan’s National Day. It’s his third as president. The first one, in 2024, was followed four days later by Joint Sword-2024B, a named PLA exercise around the whole island.

Taipei is braced for something similar. The question worth asking is what form it takes, because the evidence from 2026 points somewhere other than a repeat of 2024.

China’s Ministry of National Defense announced on Tuesday that the Type 054A frigate Honghe will conduct a joint navigation exercise with an Indonesian navy frigate in waters east of Taiwan in mid-August. The stated content of the exercise is communications drills and underway replenishment. No dates, no coordinates, no route.

On the military ledger, that is close to nothing. Two frigates steaming in company, passing signals, practising a replenishment approach. Junior officer work. The Honghe entered service in 2022 with the Eastern Theater Command and the 054A is the most numerous frigate in the PLA Navy, which is to say Beijing did not send anything it considers precious.

Taiwan’s Ministry of National Defense has published a daily count of detected PLA aircraft, naval vessels and government ships every morning since 2020. It is the most consistently maintained open-source series in the Indo-Pacific, and for four years it moved in one direction. Summed across the first six months of 2026, the fighter component comes to 1,334 sorties — less than half the figure for the same period in 2025, and the lowest operational tempo since 2023.

Beijing’s use of civilian fishing vessels as a quasi-military instrument is not new, but the scale of recent activity in the waters north of Taiwan has moved the People’s Armed Forces Maritime Militia (PAFMM) from a nuisance force into something closer to a strategic asset under active development.

The clearest signal came earlier this year, when remote-sensing analysis detected more than a thousand Chinese-flagged fishing vessels converging into tight, linear formations in the East China Sea. The pattern first appeared over Christmas, with roughly 1,700 boats arranging themselves into adjacent L-shaped lines off the coast near Ningbo. It recurred in early January, this time holding position for more than 30 hours and stretching across roughly 200 miles of open water. A third, even larger muster reportedly approached 2,000 vessels.

Taiwan’s Coast Guard Administration has detained the Chinese-crewed cargo vessel Hong Tai 58, a Togolese-flagged ship with Chinese ownership, on suspicion of deliberately severing the Taiwan-Penghu No. 3 (TP3) submarine cable — a critical communications link between Taiwan’s main island and the outlying Penghu archipelago. The incident, which occurred in the pre-dawn hours of a February morning, produced the first successful prosecution of its kind under Taiwan’s Telecommunications Management Act. The captain, a Chinese national identified as Wang, received a three-year prison sentence. Both the initial trial and appeal upheld the conviction.

The past 48 hours in the Taiwan Strait are best understood against two converging pressures: the ongoing Balikatan 2026 exercises reshaping the military geometry of the first island chain, and the approaching Trump-Xi summit that has introduced a layer of calculated restraint — and calculated anxiety — into Beijing’s Taiwan posture.

Balikatan and the PLA response. The combined Balikatan 2026 exercises, running April 20 through May 8, mark a structural inflection. Japan is participating for the first time in an active operational role, not merely as an observer. The exercise has prominently featured sea denial systems — the US Navy-Marine Corps NMESIS and Japan’s Type 88 anti-ship missile — deployed to the Batanes Islands in the Luzon Strait. The positioning is deliberate: anti-ship systems in the Batanes directly contest the PLAN’s primary breakout route from the first island chain through the Luzon Strait. Beijing read it accordingly. The Southern Theater Command announced on April 24 that a surface task group led by a Type 055 guided missile destroyer, accompanied by a Type 052D destroyer, a Type 054A frigate, and a replenishment vessel, had conducted exercises east of Luzon. The STC conducted additional South China Sea exercises on April 28, citing Philippine provocations. Unverified satellite imagery circulated on PRC social media appeared to show the carrier Liaoning operating in the South China Sea with a three-destroyer, six-frigate escort group — Liaoning had transited the Taiwan Strait southbound on April 20. Separately, the PLAN’s new Type 076 landing helicopter dock departed Shanghai for sea trials in the South China Sea around April 22, possibly in conjunction with the response posture. The PLA also released footage of YJ-20 hypersonic anti-ship missile test launches, timed to coincide with the Balikatan peak, including previously unseen shots of the launch sequence beyond what was disclosed in December.

The cables that carry Taiwan’s internet traffic run along the seafloor, mostly invisible, largely undefended, and increasingly targeted. Since 2023, a sustained pattern of sabotage — carried out by Chinese-linked vessels operating under flags of convenience and falsified identities — has emerged as one of Beijing’s sharpest tools of gray-zone pressure. The plausible deniability is deliberate. So is the damage.

A Documented Pattern, Not a Coincidence

In early 2023, Chinese-registered vessels severed two undersea cables linking Taiwan’s Matsu Islands to the main island, cutting internet access for roughly 13,000 residents for nearly two months. It was framed as an accident. The pattern since has made that framing implausible.

The Taiwan crisis is forecast as a future event. It is also a present event, conducted continuously across a spectrum of activity that does not produce headlines but does produce strategic effect. The grey zone war over Taiwan has been running for most of the last decade. Treating it as preliminary to the real war misses that the grey zone is the real war for now, and may remain so indefinitely.

The People’s Republic of China has been conducting a sustained campaign of pressure against Taiwan that falls below the threshold of armed attack and above the threshold of normal competitive statecraft. This gray zone — the space between peace and war where coercion operates through ambiguity, exhaustion, and the deliberate exploitation of thresholds — has been the primary arena of Chinese pressure on Taiwan for years and is the operating environment that Taiwan’s defense establishment spends more of its daily attention managing than any invasion scenario.

The scenario that receives the least public attention in Taiwan Strait analysis is probably the most likely path by which Beijing would attempt to compel Taiwanese political capitulation: a maritime blockade that cuts off Taiwan’s trade without the military and political costs of a full amphibious invasion. Taiwan is an island. It imports approximately 98 percent of its energy and a significant portion of its food. Its export-oriented economy depends entirely on maritime access. A blockade that prevented ships from reaching Taiwanese ports would, within weeks, begin to produce economic and social conditions that make governance difficult and, within months, conditions that make it impossible. The strategic logic is coherent, the military execution is feasible, and the allied response problem is severe.

For most of the past five decades, an informal boundary ran down the center of the Taiwan Strait. Neither side formally acknowledged its existence. Neither side inscribed it in any treaty or agreement. Both sides, for most of the period between the 1950s and 2020, generally respected it: Taiwanese and Chinese military aircraft and naval vessels operated on their respective sides, and crossings were infrequent enough to be noteworthy events that required diplomatic management. The median line was a fiction that worked because both sides found it useful. China has now decided it no longer finds it useful, and the consequences of its erasure are visible in daily military operations across the strait.

The legal status of the Taiwan Strait has become an active diplomatic flashpoint rather than a settled background condition. The United States and its allies assert that the strait is an international waterway subject to the freedom of navigation that applies to straits used for international navigation. China asserts that the strait is Chinese internal waters, through which foreign military vessels do not have an automatic right of transit. These positions are irreconcilable, and the competition to establish which one is treated as authoritative by state behavior is a current, active dimension of the Taiwan Strait competition that operates below the threshold of military confrontation.