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Beijing has sent its coast guard into the waters of the Diaoyu islands and unmanned aerial vehicles past remote Japan's territory as Beijing escalates tensions following the Japan's leader's comments regarding Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol announced that its ships carried out a “rights enforcement patrol” through the waters of the Diaoyu islands, which are under the control of Tokyo but also claimed by Beijing.

“Chinese maritime patrol unit 1307 performed surveillance within the territorial waters of the Senkaku islands. This was a legitimate rights enforcement activity undertaken by the China coast guard to protect its sovereign claims,” officials declared.

Diplomatic Spat

Beijing and Tokyo have consistently clashed around the islands but the recent developments come amid an intensifying diplomatic spat after the Japanese prime minister, the Japanese official, told parliament that if China attack the self-governing island of Taiwan it might provoke a military response from Tokyo.

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

Island's Stance

China claims Taiwan as its own territory and intends to annex it under what it terms “reunification”. It has left open the use of force. The island's administration and people overwhelmingly reject the idea of Beijing's control – choosing to preserve the status quo without formally announcing independence, but vowing to defend themselves if required.

An military assault by Beijing would risk escalating into a regional or global conflict, potentially involving the US and other allies including Japan, which has territory just 68 miles from Taiwan.

Defense Operations

In Taiwan, the defence ministry reported this weekend that it had observed 30 Chinese military aircraft, seven navy ships and one “official” ship, which was likely the maritime patrol, 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. PLA movements there are not rare, but uncommon, and Chinese military activity in Taiwan’s air defence identification zone generally has been low in the past month.

Late on Saturday, the ministry said China had been conducting another “combined military exercise” to “harass the airspace and sea around us”. It added Taiwan had dispatched military assets to monitor the situation. Taiwan documents these operations a few times monthly as part of what Taipei says is an ongoing military pressure campaign.

Political Strain

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

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

Travel and Education Advisory

Late last week, Beijing advised its people to avoid visiting Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it provided no details.

Three Chinese airlines said on Saturday that flights to Tokyo 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 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 negative impact 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 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 likely draw in other nations, including the US, and could quickly spiral into a large-scale conflict with severe repercussions.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Japanese leaders have previously avoided discussing the island openly when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the US.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the mainland 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 statements towards Taiwan.