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Beijing has deployed its coast guard into the waters of the Diaoyu islands and military drones past outlying Japan's territory as Beijing ramps up strains following the Japan's leader's remarks regarding the island of Taiwan.

Rights Enforcement Activities

On Sunday, the China's maritime patrol announced that its vessels conducted a “rights enforcement patrol” through the waters of the Diaoyu islands, which are administered by Japan but also claimed by Beijing.

“China coast guard vessel 1307 formation conducted patrols within the territorial waters of the Senkaku islands. This was a legitimate rights enforcement activity conducted by the Chinese maritime authorities to uphold its rights and interests,” officials declared.

Diplomatic Spat

China and Japan have consistently clashed around the islands but the latest activity occur during an escalating political dispute after the Japanese prime minister, the Japanese official, told parliament that if Beijing assaults democratically ruled Taiwan it could trigger a military response from Tokyo.

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

Taiwan's Position

Beijing asserts Taiwan as its own territory and plans to incorporate it under what it terms “unification”. It has left open the use of force. The island's administration and people overwhelmingly reject the prospect of Chinese rule – choosing to preserve the status quo without formally announcing independence, but vowing to defend themselves if necessary.

An military assault by China would threaten to spiral into a regional or global conflict, potentially involving the United States and other partner nations including Japan, which has land just 110km (68 miles) from Taiwan.

Defense Operations

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 island over the previous day.

Maps provided by the ministry showed up to multiple UAVs flying between Taiwan and the Japan's territory off its north-east coast, seeming to travel unusually near to the nearby Japanese island. PLA movements there are not rare, but uncommon, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been minimal in recent weeks.

Late on Saturday, 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 track the developments. The island documents these operations a couple of times a month as part of what the Taiwanese government says is an ongoing military pressure campaign.

Political Strain

Tokyo has been experiencing increased strain from Beijing since Takaichi made her remarks, with Beijing's diplomatic representative in the Japanese city triggering an official complaint from Tokyo by stating that “those who interfere will face consequences”.

China then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry declared that any Tokyo's involvement would be doomed to fail.

Warning for Citizens

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

Three Chinese airlines announced this weekend that flights to Tokyo could be refunded or changed for free.

Adding to the tensions, Beijing's administration 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 population of learners from China could have a negative impact on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to education statistics. They included more than 123,000 Chinese students – by far the single biggest group.

Official Commentary

Earlier this weekend, a Chinese state media editorial 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 unimaginable consequences.”

Policy Standpoints

The administration in Taipei says only its people can decide its future. Officials in Tokyo have traditionally refrained from publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the United States.

Nevertheless, Beijing's governing party says the unification of Taiwan with the mainland China is “unavoidable”, and portrays dissent as provocative. As it moves towards being capable of military annexation, Beijing has also been increasing its political operations and its rhetoric towards the island.