China puts the ‘squeeze’ on Taiwan with new maritime patrols 

Taipei, Taiwan – China’s coastguard and civilian fleet are expanding their presence in the waters east of Taiwan, raising fears that Beijing may be rehearsing a containment strategy that would cut off the self-ruled island from outside trade and assistance.

Through June and July, China’s Maritime Safety Administration and coastguard staged multiple patrols and “special maritime law enforcement operations”, according to official government announcements.

While China regularly patrols the Taiwan Strait – the waterway with an average width of about 180km (112 miles) separating coastal China from the main island of Taiwan – this marks the first time the patrols have moved east of Taiwan in such quick succession, according to analysts.

K Tristan Tang, a nonresident fellow at the United States-based National Bureau of Asian Research, said the shift carries both strategic and symbolic weight for Taiwan.

“Beijing is signalling that it wants to extend its claimed administrative jurisdiction to Taiwan’s eastern waters, effectively surrounding Taiwan rather than only eroding Taiwan’s space in the strait,” Tang told Al Jazeera.

“Law enforcement operations” have included patrolling the area and requesting information from commercial vessels about their origin and destination, according to Taipei.

The shift east has also occurred amid a greater uptick in Chinese maritime activity around Taiwan and its outlying islands. Taiwan reported 55 sightings of Chinese coastguard and research vessel activity in June, up from 30 sightings in May.

These sightings included Chinese activity near the uninhabited Taiwan-controlled Dongsha Islands, also known as the Pratas Islands, in the South China Sea.

Beijing has said the operations are a response to talks between Japan and the Philippines to set their maritime boundaries, which infringe on “territorial sovereignty as well as its maritime rights and interests”, according to Chinese state media.

Some of the waters around southern Japan and the northern Philippines overlap with Taiwan’s Exclusive Economic Zone (EEZ), which extends 200 nautical miles (370km) from its coastline.

On July 4, China’s coastguard announced that law enforcement activities to the east of Taiwan would continue to “firmly safeguard China’s territorial sovereignty and maritime rights and interests”.

China claims Taiwan as a province – which means it also views Taiwan’s EEZ as under its jurisdiction. It also claims large swaths of the nearby South China Sea and East China Sea, some of which are disputed by Japan, the Philippines, Vietnam, Malaysia, Indonesia and Brunei.

China’s Ministry of Foreign Affairs has previously told reporters that its activities near Taiwan are “legitimate actions to exercise China’s jurisdiction, safeguard regional stability and uphold order at sea in accordance with the law”.

The Chinese embassy in Washington, DC did not immediately respond to Al Jazeera’s request for comment.

‘Grey zone’ tactics

Ray Powell, founder and director of Sea Light, a maritime transparency project based at Stanford University, said he views the uptick in patrols as part of China’s “boa constrictor strategy that intends to squeeze Taiwan one coil at a time”.

China has pledged to annex Taiwan by peace or by force, and it employs a variety of pressure tactics, from cutting off access to international spaces such as the World Health Organization, drone and fighter jet incursions, to alleged cyberattacks, according to Taiwan’s National Security Bureau.

Known as “grey zone” tactics, these manoeuvres are designed to strain Taiwan’s limited resources and damage morale in order to convince its 23 million people that annexation is inevitable, according to Taiwanese officials.

Security analysts like Powell have warned that “law enforcement” activities could quickly escalate into a blockade or quarantine. Taiwan is particularly vulnerable to this type of pressure as an island that imports nearly all its energy supplies.

“One day we could look back at this and say this was in some ways the start of the quarantine,” he told Al Jazeera.

“Today it’s radio challenges; what is the next stage after that? When do we start to see them stop and inspect ships or reroute them? It’s not a very big step to start squeezing Taiwan on things it needs, like LNG,” Powell said.

China has already signalled that a blockade could be on the table in the future. Since 2022, Beijing has regularly staged large-scale military exercises in the Taiwan Strait, including a simulated blockade of the island during its last round of exercises in December.

While coastguard activity is more low-profile than a naval patrol, Chauluen Lin, an expert in asymmetric warfare at Taipei’s Institute for National Defense and Security Research, told Al Jazeera the fleet could be considered a “second navy”.

China’s coastguard is not a civilian police force, as it falls under the jurisdiction of the Central Military Commission as a division of the People’s Armed Police.

China’s coastguard patrols have been unusual enough to elicit a rare joint response from the United Kingdom, Germany and France, who said in late June that the “actions threaten regional stability and the freedom of navigation and safety of international shipping”.

“We reiterate our opposition to any unilateral change to the status quo, particularly by threat or use of force or coercion,” the statement said.

US Secretary of State Marco Rubio said last week that Washington disagrees with the expanded patrols and that they undermine regional stability.

A distracted US

William Yang, the Crisis Group’s senior analyst for Northeast Asia, told Al Jazeera that Beijing may be taking advantage of a US distracted by the war in Iran and a president who appears ambivalent towards Taiwan.

Although the US does not recognise Taiwan as a country, it has pledged to help the island defend itself. Much of this assistance has come in the form of weapons sales, training and intelligence sharing.

US President Donald Trump also cast doubt on these commitments when he said US weapons sales could be a “negotiating chip” with China following a meeting with Chinese leader Xi Jinping in May.

“The external environment has fundamentally changed in the Indo-Pacific region, at least from their perspective, with Washington very focused and tangled up in the Middle East,” Yang said.

“At the same time, the US has no bandwidth to really look at or respond to such an expansion of Chinese maritime operations in these sensitive waters,” he added.