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China has deployed its maritime law enforcement through the waters of the Diaoyu islands and unmanned aerial vehicles past outlying Japan's territory as Beijing ramps up strains following the Japanese prime minister’s comments regarding the island of Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol announced that its vessels conducted a “lawful patrol operation” through the territorial seas of the Diaoyu islands, which are under the control of Japan but also claimed by China.

“Chinese maritime patrol unit 1307 conducted patrols within the territorial waters of the Diaoyu islands. This was a legitimate rights enforcement activity conducted by the China coast guard to uphold its rights and interests,” the statement said.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the disputed territory but the latest activity occur during an intensifying diplomatic spat after the Japanese prime minister, the Japanese official, told parliament that if Beijing assaults the self-governing island of Taiwan it could trigger a military response from Tokyo.

That provoked a furious reaction from Beijing, which has indicated it demands a withdrawal from Takaichi.

Taiwan's Position

China claims Taiwan as its sovereign land and plans to incorporate it under what it terms “unification”. It has not ruled out the military option. The island's administration 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 required.

An attack or invasion by Beijing would risk escalating into a regional or global conflict, potentially involving the US and other allies including Tokyo, which has territory just 68 miles from the island.

Military Activity

On the island, the military authorities said on Sunday morning that it had detected 30 Chinese military aircraft, seven navy ships and one “official” ship, which was likely the coast guard, active near the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs operating near the island and the Japanese islands off its northeastern shoreline, appearing to go unusually near to Yonaguni. PLA movements there are occasional, but uncommon, and Chinese military activity in Taiwan’s air defence identification zone generally has been minimal in the past month.

Earlier this weekend, the ministry said Beijing had been conducting another “combined military exercise” to “harass the airspace and sea around us”. It added the island had sent its own aircraft and ships 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

Tokyo has been facing mounting pressure from China since Takaichi made her remarks, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Japan by stating that “the dirty head that sticks itself out must be cut off”.

China then summoned the Japanese ambassador for the first occasion since 2023, and China’s defence ministry declared that any Tokyo's involvement would be doomed to fail.

Travel and Education Advisory

On Friday, Beijing 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 tickets to Japan could be refunded or changed for free.

In another escalation, China’s government on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an unstable security environment.

While the advice does not amount to a ban, a significant decrease in the number of Chinese students could have a negative impact on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to official data. They featured over 123,000 learners from China – by far the single biggest group.

Official Commentary

Earlier this weekend, a official press commentary accused Takaichi of staging a political stunt 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 powers, including the US, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Strategic Positions

The government of Taiwan 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 Japan's primary defense partner, the United States.

However, Beijing's governing party says the unification of Taiwan with the mainland China is “unavoidable”, and casts any opposition to it as escalatory. As it advances toward potential armed takeover, Beijing has also been increasing its political operations and its rhetoric towards Taiwan.