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Beijing has sent its maritime law enforcement through the maritime area of the Senkaku islands and military drones near outlying Japanese territory as Beijing ramps up strains over the Japan's leader's comments regarding Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard announced that its ships conducted a “lawful patrol operation” through the territorial seas of the Diaoyu islands, which are administered by Japan but also asserted as territory by China.

“Chinese maritime patrol unit 1307 conducted patrols within the maritime jurisdiction of the Diaoyu islands. This was a legitimate rights enforcement activity conducted by the Chinese maritime authorities to protect its sovereign claims,” the statement said.

Diplomatic Spat

China and Japan have consistently clashed around the islands but the recent developments come amid an escalating political dispute after the Japanese prime minister, Sanae Takaichi, told parliament that if China attack democratically ruled Taiwan it could trigger a armed reaction from Japan.

That sparked an angry response from China, which has signalled it expects a retraction from Takaichi.

Taiwan's Position

China claims Taiwan as its sovereign land and plans to incorporate it under what it describes as “unification”. It has left open the military option. Taiwan’s government and citizens overwhelmingly reject the prospect of Chinese rule – preferring to maintain the current situation without formally announcing independence, but pledging to protect their sovereignty if necessary.

An attack or invasion by Beijing would threaten to spiral into a regional or global conflict, potentially involving the United States and other allies including Japan, which has territory just 110km (68 miles) from Taiwan.

Military Activity

In Taiwan, the military authorities reported this weekend that it had observed three dozen PLA planes, multiple naval vessels and one government vessel, which was likely the maritime patrol, active near the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs flying between Taiwan and the Japan's territory off its north-east coast, seeming to travel particularly close to the nearby Japanese island. Chinese military transits there are not rare, but uncommon, and Beijing's defense operations in the island's ADIZ generally has been low in the past month.

Late on Saturday, the defense officials said Beijing had been carrying out another “combined military exercise” to “harass the airspace and sea around us”. It added Taiwan had sent its own aircraft and ships to monitor the situation. Taiwan documents these operations a few times monthly as part of what the Taiwanese government says is an continuous strategic pressure.

Political Strain

Tokyo has been facing mounting pressure from China since Takaichi made her remarks, with Beijing's diplomatic representative in Osaka prompting a formal protest from Japan by commenting that “those who interfere will face consequences”.

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

Travel and Education Advisory

Late last week, Beijing advised its people to avoid visiting Japan, prompting Tokyo to urge Beijing to take “suitable actions”, though it provided no details.

Three Chinese airlines said on Saturday that tickets to Japan could be cancelled without penalty.

Adding to the tensions, Beijing's administration on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized 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 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.

Official Commentary

Late on Saturday, a official press commentary charged the Japanese official with performing a diplomatic maneuver that was “both reckless and fundamentally flawed”.

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

Policy Standpoints

The government of Taiwan says only its people can decide its future. Officials in Tokyo have previously avoided discussing the island openly when addressing potential conflicts, maintaining a “strategic ambiguity” also preferred by Japan's primary defense partner, the United States.

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