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China has deployed its coast guard through the maritime area of the Senkaku islands and military drones past remote Japanese territory as China escalates tensions following the Japanese prime minister’s comments regarding the island of Taiwan.

Rights Enforcement Activities

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 administered by Japan but also claimed by Beijing.

“China coast guard vessel 1307 formation performed surveillance within the maritime jurisdiction of the Senkaku islands. This was a lawful patrol operation undertaken by the China coast guard to uphold its rights and interests,” officials declared.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the disputed territory but the latest activity come amid an escalating political dispute after the Japanese prime minister, Sanae Takaichi, told parliament that if China attack the self-governing island of Taiwan it could trigger a military response from Japan.

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

Island's Stance

Beijing asserts the island as its own territory and intends to annex it under what it terms “reunification”. It has left open the use of force. Taiwan’s government and people categorically refuse the prospect of Chinese rule – choosing to preserve the status quo without explicitly declaring themselves independent, but vowing to defend themselves if necessary.

An military assault by China would threaten to spiral into a international confrontation, potentially involving the US and other allies including Tokyo, which has land just 68 miles from Taiwan.

Military Activity

On the island, the defence ministry reported this weekend that it had detected 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was probably the coast guard, active near the territory over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near Taiwan and the Japanese islands off its north-east coast, appearing to go particularly close to Yonaguni. Chinese military transits there are occasional, but infrequent, 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 “harass the airspace and sea around us”. It added Taiwan had dispatched military assets to track the developments. The island reports such Chinese patrols a couple of times a month as part of what Taipei says is an continuous strategic pressure.

Political Strain

Japan has been facing mounting pressure from Beijing since Takaichi made her comments, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Tokyo by stating that “those who interfere will face consequences”.

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 doomed to fail.

Travel and Education Advisory

Late last week, Beijing cautioned its citizens against travelling to Japan, leading Japan to request China to take “suitable actions”, though it did not elaborate.

Three Chinese airlines said on Saturday that flights to Tokyo could be refunded or changed for free.

In another escalation, Beijing's administration on Sunday advised students to rethink education plans in Japan, citing what it characterized as an unstable security environment.

While the advice does not amount to a ban, a dramatic reduction in the number of Chinese students could have a detrimental effect on academic institutions in Japan. 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

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 probably involve other powers, including the United States, and could quickly spiral into 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 traditionally refrained from discussing the island openly when discussing such scenarios, maintaining a “strategic ambiguity” also preferred by Tokyo’s main security ally, the United States.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “unavoidable”, and casts any opposition to it as escalatory. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its statements towards Taiwan.