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China has sent its maritime law enforcement into the waters of the Diaoyu islands and military drones past outlying Japan's territory as China ramps up strains over the Japanese prime minister’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 waters of the Senkaku, which are administered by Japan but also claimed by China.

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

Diplomatic Spat

China and Japan have consistently clashed around the islands but the recent developments occur during an escalating political dispute after the Japanese prime minister, the Japanese official, addressed lawmakers that if Beijing assaults democratically ruled Taiwan it could trigger a military response from Japan.

That sparked an angry response from Beijing, which has indicated it demands a withdrawal from Takaichi.

Island's Stance

Beijing asserts the island as its own territory and plans to incorporate it under what it terms “reunification”. It has left open the use of force. The island's administration and citizens overwhelmingly reject the idea of Beijing's control – preferring to maintain the current situation without formally announcing independence, but vowing to defend themselves if required.

An attack or invasion by Beijing would threaten to spiral into a international confrontation, potentially involving the US and other partner nations including Japan, which has territory just 110km (68 miles) from Taiwan.

Military Activity

On the island, the defence ministry reported this weekend that it had observed three dozen PLA planes, multiple naval vessels and one government vessel, which was likely the coast guard, operating around the island 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, seeming to travel unusually near to Yonaguni. PLA movements there are not rare, but uncommon, and Chinese military activity in the island's ADIZ generally has been minimal in the past month.

Late on Saturday, the defense officials said China had been carrying out another “joint combat patrol” to “test our defensive capabilities”. It added Taiwan had sent its own aircraft and ships to monitor the situation. 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 experiencing increased strain from China since Takaichi made her remarks, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Japan by commenting that “those who interfere will face consequences”.

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

Travel and Education Advisory

On Friday, Beijing advised its people to avoid visiting Japan, leading Japan to request China to take “appropriate measures”, though it provided no details.

Multiple carriers from China announced this weekend that flights to Tokyo could be refunded or changed for free.

In another escalation, Beijing's administration on the weekend advised students to rethink education plans in Japan, citing what it characterized as an volatile safety situation.

While the advice does not amount to a ban, a significant decrease in the population of learners from China could have a detrimental effect on Japanese universities. A record 336,708 foreign nationals were studying in Japan last year, according to education statistics. They included more than 123,000 Chinese students – by far the largest demographic.

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 United States, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Policy Standpoints

The administration in Taipei says only its people can decide its future. Officials in Tokyo have previously avoided discussing the island openly when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the United States.

Nevertheless, Beijing's governing party says the incorporation of the island with the People’s Republic of China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, Beijing has also been increasing its political operations and its statements towards the island.