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Beijing has sent its coast guard through the maritime area of the Senkaku islands and unmanned aerial vehicles near remote Japanese territory as Beijing escalates strains following the Japan's leader's remarks regarding the island of Taiwan.

Patrol Operations

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

“Chinese maritime patrol unit 1307 performed surveillance within the maritime jurisdiction of the Diaoyu islands. This was a legitimate rights enforcement activity undertaken by the China coast guard to uphold its rights and interests,” officials declared.

Bilateral Tensions

Beijing and Tokyo have repeatedly faced off around the islands but the recent developments occur during an intensifying diplomatic spat after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if China attack the self-governing island of Taiwan it might provoke a military response from Tokyo.

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

Taiwan's Position

China claims the island as its own territory and intends to annex it under what it terms “unification”. It has not ruled out the use of force. Taiwan’s government and citizens categorically refuse the idea of Beijing's control – preferring to maintain the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if required.

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 land just 110km (68 miles) from Taiwan.

Defense Operations

In Taiwan, the defence ministry reported this weekend that it had detected three dozen PLA planes, seven navy ships and one “official” ship, which was probably the maritime patrol, active near the territory over the past 24 hours.

Official charts released showed up to multiple UAVs flying between the island and the Japan's territory off its northeastern shoreline, seeming to travel particularly close to the nearby Japanese island. PLA movements there are not rare, but infrequent, and Chinese military activity in the island's ADIZ generally has been minimal in recent weeks.

Earlier this weekend, the defense officials said China had been conducting 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. 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 comments, with Beijing's diplomatic representative in Osaka prompting a formal protest from Japan by stating that “the dirty head that sticks itself out must be cut off”.

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

Warning for Citizens

On Friday, Beijing cautioned its citizens against travelling to Japan, leading Japan to request China to take “appropriate measures”, though it provided no details.

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 advised students to rethink education plans in Japan, citing what it characterized 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 Japanese universities. A record 336,708 foreign nationals were studying in Japan last year, according to education statistics. They featured over 123,000 learners from China – by far the largest demographic.

Official Commentary

Late on Saturday, a Chinese state media editorial accused Takaichi of staging a political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A conflict between Japan and China would not be a small-scale encounter; it would probably involve other powers, including the US, and could rapidly escalate to a major confrontation with unimaginable consequences.”

Strategic Positions

The government of Taiwan says only its people can decide its future. Japanese leaders have traditionally refrained from discussing the island openly when addressing potential conflicts, maintaining a “strategic ambiguity” also preferred by Tokyo’s main security ally, the United States.

However, Beijing's governing party says the unification of Taiwan with the mainland China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, Beijing has also been escalating its non-military activity and its rhetoric towards Taiwan.