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China has deployed its maritime law enforcement into the maritime area of the Diaoyu islands and military drones past outlying Japanese territory as Beijing ramps up tensions over the Japanese prime minister’s comments regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard announced that its ships carried out a “lawful patrol operation” through the waters of the Senkaku, which are administered by Japan but also asserted as territory by China.

“Chinese maritime patrol unit 1307 performed surveillance within the territorial waters of the Diaoyu islands. This was a lawful patrol operation undertaken by the China coast guard to uphold its rights and interests,” the statement said.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the disputed territory but the latest activity come amid an escalating political dispute after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if China attack the self-governing island of Taiwan it might provoke a armed reaction from Tokyo.

That provoked a furious reaction from Beijing, which has indicated it demands a withdrawal from the Japanese official.

Taiwan's Position

Beijing asserts Taiwan as its own territory and intends to annex it under what it terms “unification”. It has left open the use of force. Taiwan’s government and citizens overwhelmingly reject the idea of Beijing's control – choosing to preserve the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if required.

An attack or invasion by China would threaten to spiral into a international confrontation, potentially involving the United States and other allies including Tokyo, which has territory just 68 miles from Taiwan.

Defense Operations

On the island, the military authorities reported this weekend that it had detected 30 Chinese military aircraft, multiple naval vessels and one “official” ship, which was probably the maritime patrol, active near the island over the previous day.

Maps provided by the ministry showed up to three drones flying between Taiwan and the Japanese islands off its northeastern shoreline, seeming to travel unusually near to the nearby Japanese island. Chinese military transits there are not rare, but infrequent, and Chinese military activity in the island's ADIZ generally has been low in recent weeks.

Earlier this weekend, the defense officials said China had been carrying out another “combined military exercise” to “test our defensive capabilities”. It added the island had dispatched military assets to monitor the situation. The island documents these operations a couple of times a month as part of what Taipei says is an ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been facing mounting pressure from China since Takaichi made her remarks, with Beijing's diplomatic representative in the Japanese city triggering an official complaint from Japan by commenting that “those who interfere will face consequences”.

China then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry stated that any Tokyo's involvement would be certain to collapse.

Warning for Citizens

Late last week, China advised its people to avoid visiting Japan, leading Japan to request China to take “suitable actions”, though it did not elaborate.

Multiple carriers from China announced this weekend that tickets to Japan could be cancelled without penalty.

In another escalation, Beijing's administration on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an volatile safety situation.

Although not an outright prohibition, a dramatic reduction in the population of learners from China could have a detrimental effect on Japanese universities. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to official data. They included more than 123,000 Chinese students – by far the largest demographic.

Official Commentary

Late on Saturday, a official press commentary accused Takaichi of staging a diplomatic maneuver that was “not just dangerously provocative but fundamentally perverse”.

“A clash between Tokyo and Beijing would not be a limited skirmish; it would probably involve other nations, including the US, and could rapidly escalate to a large-scale conflict with severe repercussions.”

Policy Standpoints

The administration in Taipei says the island's residents alone determine their destiny. Officials in Tokyo have previously avoided publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also preferred by Tokyo’s main security ally, the US.

Nevertheless, China’s ruling Communist party says the unification of Taiwan with the mainland China is “unavoidable”, and casts any opposition to it as escalatory. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its rhetoric towards Taiwan.