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Beijing has sent its maritime law enforcement into the maritime area of the Diaoyu islands and military drones near remote Japan's territory as China ramps up tensions over the Japan's leader's comments regarding the island of 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 Diaoyu islands, which are administered by Japan but also claimed by China.

“China coast guard vessel 1307 formation conducted patrols within the maritime jurisdiction of the Senkaku islands. This was a lawful patrol operation conducted by the Chinese maritime authorities to protect its sovereign claims,” the statement said.

Bilateral Tensions

China and Japan have repeatedly faced off around the disputed territory but the recent developments occur during an intensifying diplomatic spat after the Japanese prime minister, the Japanese official, told parliament that if Beijing assaults democratically ruled Taiwan it could trigger a armed reaction from Tokyo.

That provoked a furious reaction from Beijing, which has signalled it expects a retraction from the Japanese official.

Island's Stance

China claims the island as its sovereign land and plans to incorporate it under what it terms “reunification”. It has not ruled out the use of force. Taiwan’s government and people overwhelmingly reject the idea of Beijing's control – preferring to maintain the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if necessary.

An military assault by China would threaten to spiral into a regional or global conflict, possibly drawing in the United States and other partner nations including Japan, which has territory just 110km (68 miles) from Taiwan.

Defense Operations

In Taiwan, the military authorities said on Sunday morning that it had detected 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was likely the maritime patrol, operating around the territory over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near the island and the Japan's territory off its northeastern shoreline, seeming to travel unusually near to Yonaguni. PLA movements there are not rare, but infrequent, and Chinese military activity in the island's ADIZ generally has been minimal in the past month.

Earlier this weekend, the ministry said Beijing had been conducting another “combined military exercise” to “test our defensive capabilities”. It noted 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 Taipei says is an continuous strategic pressure.

Diplomatic Pressure

Tokyo has been facing mounting pressure from China since Takaichi made her comments, with China’s consul general in Osaka prompting a formal protest from Japan by stating that “the dirty head that sticks itself out must be cut off”.

Beijing then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry declared that any Japanese intervention would be doomed to fail.

Travel and Education Advisory

On Friday, 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 flights to Tokyo could be refunded or changed for free.

Adding to the tensions, China’s government on Sunday advised students to rethink education plans in Japan, citing what it described as an volatile safety situation.

Although not an outright prohibition, a significant decrease in the number of Chinese students could have a detrimental effect on academic institutions in Japan. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to official data. They featured over 123,000 learners from China – by far the largest demographic.

Media Response

Late on Saturday, a Chinese state media editorial charged the Japanese official with performing a diplomatic maneuver that was “both reckless and fundamentally flawed”.

“A conflict between Japan and China would not be a small-scale encounter; it would probably involve other nations, including the US, 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. Japanese leaders have traditionally refrained from publicly mentioning Taiwan when addressing potential conflicts, maintaining a “strategic ambiguity” also preferred by Tokyo’s main security ally, the US.

However, China’s ruling Communist party says the incorporation of the island with the People’s Republic of 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 rhetoric towards the island.