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Beijing has sent its maritime law enforcement through the waters of the Diaoyu islands and military drones past remote Japanese territory as Beijing ramps up tensions over the Japanese prime minister’s comments regarding Taiwan.

Patrol Operations

On Sunday, the Chinese coast guard stated that its vessels conducted a “rights enforcement patrol” through the waters of the Diaoyu islands, which are under the control of Tokyo but also claimed by Beijing.

“China coast guard vessel 1307 formation conducted patrols within the maritime jurisdiction of the Diaoyu 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 consistently clashed around the islands but the recent developments occur during an escalating political dispute after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if Beijing assaults democratically ruled Taiwan it could trigger a armed reaction from Tokyo.

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

Island's Stance

China claims the island as its own territory and intends to annex it under what it terms “unification”. It has left open the military option. The island's administration and people categorically refuse 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 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 68 miles from the island.

Military Activity

On the island, the military authorities reported this weekend that it had detected three dozen PLA planes, seven navy ships and one “official” ship, which was likely the coast guard, operating around the island over the previous day.

Official charts released showed up to multiple UAVs flying between the island and the Japan's territory off its northeastern shoreline, appearing to go unusually near to the nearby Japanese island. PLA movements there are occasional, but infrequent, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been minimal in recent weeks.

Earlier this weekend, the ministry said China had been conducting another “joint combat patrol” to “test our defensive capabilities”. It added the island had dispatched military assets to track the developments. Taiwan reports such Chinese patrols a few times monthly as part of what Taipei says is an continuous strategic pressure.

Diplomatic Pressure

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

China then summoned the Japanese ambassador for the first occasion since 2023, and Beijing's military authorities 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 provided no details.

Multiple carriers from China announced this weekend 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 described as an unstable security environment.

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 Japanese universities. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to education statistics. They featured over 123,000 learners from China – by far the single biggest group.

Official Commentary

Late on Saturday, a official press commentary charged the Japanese official with performing a diplomatic maneuver 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 powers, including the US, and could quickly spiral into a major confrontation with unimaginable consequences.”

Strategic Positions

The administration in Taipei says only its people can decide its future. Japanese leaders have previously avoided discussing the island openly when discussing such scenarios, maintaining a “deliberate vagueness” also preferred 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, Beijing has also been escalating its non-military activity and its rhetoric towards Taiwan.