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Beijing has deployed its coast guard through the maritime area of the Senkaku islands and unmanned aerial vehicles near outlying Japan's territory as China ramps up strains over the Japan's leader's remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard stated that its vessels conducted a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Japan but also asserted as territory by China.

“China coast guard vessel 1307 formation performed surveillance within the maritime jurisdiction of the Diaoyu islands. This was a legitimate rights enforcement activity undertaken by the China coast guard to protect its sovereign claims,” the statement said.

Diplomatic Spat

China and Japan have consistently clashed around the islands but the latest activity occur during an escalating political dispute after the Japan's leader, the Japanese official, told parliament that if China attack democratically ruled Taiwan it might provoke a military response from Japan.

That sparked an angry response from Beijing, which has signalled it expects a retraction from the Japanese official.

Taiwan's Position

China claims the island as its own territory and intends to annex it under what it describes as “unification”. It has not ruled out the military option. Taiwan’s government and people overwhelmingly reject the prospect of Chinese rule – preferring to maintain the status quo without formally announcing independence, but pledging to protect their sovereignty if required.

An military assault by China would threaten to spiral into a international confrontation, possibly drawing in the US and other allies including Tokyo, which has territory just 110km (68 miles) from Taiwan.

Defense Operations

On the island, the military authorities reported this weekend that it had observed 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was likely the coast guard, active near the island over the past 24 hours.

Official charts released showed up to three drones flying between the island and the Japanese islands off its north-east coast, seeming to travel unusually near to the nearby Japanese island. PLA movements there are not rare, but uncommon, and Chinese military activity in Taiwan’s air defence identification zone generally has been low in the past month.

Earlier this weekend, the ministry said Beijing had been carrying out another “joint combat patrol” to “test our defensive capabilities”. It added Taiwan had dispatched military assets to track the developments. The island documents these operations a few times monthly as part of what the Taiwanese government says is an ongoing military pressure campaign.

Political Strain

Tokyo has been facing mounting pressure from China since Takaichi made her comments, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Tokyo by stating that “those who interfere will face consequences”.

Beijing then summoned the Japanese ambassador for the first occasion since 2023, and Beijing's military authorities stated that any Japanese intervention would be certain to collapse.

Travel and Education Advisory

On Friday, China cautioned its citizens against travelling to Japan, leading Japan to request China to take “appropriate measures”, though it provided no details.

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

In another escalation, China’s government 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 negative impact on academic institutions in Japan. A historic high of over 336,000 international students were enrolled in Japanese schools last year, according to official data. They featured over 123,000 learners from China – by far the single biggest group.

Media Response

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

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would probably involve other powers, including the US, and could quickly spiral into a large-scale conflict with unimaginable consequences.”

Strategic Positions

The administration in Taipei says only its people can decide its future. Officials in Tokyo have previously avoided publicly mentioning Taiwan when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the US.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “inevitable”, and portrays dissent as provocative. As it moves towards being capable of military annexation, China has also been escalating its non-military activity and its rhetoric towards the island.