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China has deployed its maritime law enforcement into the maritime area of the Senkaku islands and unmanned aerial vehicles near outlying Japanese territory as China escalates tensions over the Japanese prime minister’s remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the China's maritime patrol stated that its ships carried out a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Tokyo but also claimed by China.

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

Bilateral Tensions

China and Japan have consistently clashed around the islands but the latest activity occur during an intensifying diplomatic spat after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if Beijing assaults democratically ruled Taiwan it could trigger a armed reaction from Tokyo.

That provoked a furious reaction from China, which has signalled it expects a withdrawal from Takaichi.

Island's Stance

Beijing asserts Taiwan as its sovereign land and intends to annex it under what it describes as “unification”. It has left open the use of force. The island's administration and citizens categorically refuse the prospect of Chinese rule – choosing to preserve the current situation without explicitly declaring themselves independent, but vowing to defend themselves if required.

An attack or invasion by Beijing would risk escalating into a regional or global conflict, possibly drawing in the United States and other partner nations including Tokyo, which has land just 68 miles from Taiwan.

Military Activity

On the island, the military authorities said on Sunday morning that it had observed 30 Chinese military aircraft, seven navy ships and one government vessel, which was likely the maritime patrol, operating around the territory over the previous day.

Official charts released showed up to three drones flying between the island and the Japanese islands off its north-east coast, appearing to go particularly close to the nearby Japanese island. PLA movements there are not rare, but uncommon, and Beijing's defense operations in the island's ADIZ generally has been low in the past month.

Earlier this weekend, the defense officials said Beijing had been conducting another “joint combat patrol” to “harass the airspace and sea around us”. It noted Taiwan 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 continuous strategic pressure.

Diplomatic Pressure

Japan has been experiencing increased strain from Beijing since the Japanese official made her comments, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Tokyo 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 declared that any Japanese intervention would be certain to collapse.

Warning for Citizens

On Friday, China cautioned its citizens against travelling to Japan, leading Japan to request China to take “suitable actions”, though it did not elaborate.

Multiple carriers from China said on Saturday that flights to Tokyo could be refunded or changed for free.

Adding to the tensions, China’s government on the weekend urged its citizens to “carefully reconsider” studying in Japan, citing what it described as an unstable security environment.

Although not an outright prohibition, a dramatic reduction in the population of learners from China could have a negative impact on Japanese universities. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to education statistics. They featured over 123,000 learners from China – by far the single biggest group.

Media Response

Earlier this weekend, a official press commentary accused Takaichi of staging a diplomatic maneuver that was “both reckless and fundamentally flawed”.

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

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Officials in Tokyo have traditionally refrained from publicly mentioning Taiwan when addressing potential conflicts, maintaining a “deliberate vagueness” also preferred by Japan's primary defense partner, the United States.

Nevertheless, Beijing's governing party says the unification of Taiwan with the People’s Republic of China is “unavoidable”, and casts any opposition to it as escalatory. As it moves towards being capable of military annexation, China has also been escalating its non-military activity and its statements towards the island.