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Beijing has sent its coast guard through the waters of the Senkaku islands and military drones near remote Japanese territory as China escalates tensions following the Japanese prime minister’s remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard stated that its ships carried out a “rights enforcement patrol” through the territorial seas of the Diaoyu islands, which are administered by Tokyo but also claimed by China.

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

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the islands but the latest activity come amid an intensifying diplomatic spat after the Japanese prime minister, Sanae Takaichi, told parliament that if China attack the self-governing island of Taiwan it could trigger a armed reaction from Tokyo.

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

Taiwan's Position

Beijing asserts Taiwan as its sovereign land and intends to annex it under what it terms “unification”. It has not ruled out the use of force. The island's administration and people categorically refuse the prospect of Chinese rule – preferring to maintain the status quo 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, possibly drawing in the United States and other partner nations including Tokyo, which has land just 68 miles from the island.

Military Activity

On the island, the defence ministry reported this weekend that it had observed three dozen PLA planes, seven navy ships and one “official” ship, which was likely the coast guard, operating around the territory over the past 24 hours.

Official charts released showed up to three drones operating near Taiwan and the Japanese islands off its northeastern shoreline, seeming to travel particularly close to the nearby Japanese island. PLA movements there are occasional, but uncommon, and Chinese military activity in the island's ADIZ generally has been low in the past month.

Earlier this weekend, the defense officials said Beijing had been carrying out another “combined military exercise” to “harass the airspace and sea around us”. It added Taiwan had dispatched military assets to track the developments. Taiwan documents these operations a few times monthly as part of what Taipei says is an continuous strategic pressure.

Diplomatic Pressure

Tokyo has been experiencing increased strain from Beijing since Takaichi made her comments, with Beijing's diplomatic representative in Osaka prompting a formal protest from Japan by stating that “those who interfere will face consequences”.

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

Warning for Citizens

On Friday, Beijing advised its people to avoid visiting Japan, leading Japan to request China to take “appropriate measures”, though it did not elaborate.

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

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

Although not an outright prohibition, 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

Earlier this weekend, a official press commentary accused Takaichi of staging a political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would likely draw in other powers, including the United States, and could rapidly escalate to a major confrontation with severe repercussions.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Officials in Tokyo have previously avoided publicly mentioning Taiwan when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Tokyo’s main security ally, the US.

However, Beijing's governing party says the unification of Taiwan with the People’s Republic of China is “unavoidable”, and casts any opposition to it as escalatory. As it moves towards being capable of military annexation, China has also been escalating its non-military activity and its rhetoric towards the island.