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Beijing has sent its maritime law enforcement through the waters of the Diaoyu islands and unmanned aerial vehicles past remote Japanese territory as China escalates strains following the Japanese prime minister’s comments regarding Taiwan.

Rights Enforcement Activities

On Sunday, the Chinese coast guard stated that its vessels carried out a “rights enforcement patrol” through the waters of the Senkaku, which are under the control of Japan but also asserted as territory by Beijing.

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

Bilateral Tensions

China and Japan have consistently clashed around the disputed territory but the latest activity come amid an escalating political dispute after the Japan's leader, Sanae Takaichi, told parliament that if China attack democratically ruled Taiwan it could trigger a armed reaction from Japan.

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

Island's Stance

China claims Taiwan as its own territory and intends to annex it under what it terms “reunification”. It has not ruled out the military option. 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 necessary.

An military assault by China would risk escalating into a regional or global conflict, possibly drawing in the United States and other allies including Tokyo, which has territory just 68 miles from the island.

Military Activity

On the island, the defence ministry reported this weekend that it had detected 30 Chinese military aircraft, seven navy ships and one “official” ship, which was probably the maritime patrol, operating around the island over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near the island and the Japan's territory off its northeastern shoreline, appearing to go unusually near to Yonaguni. PLA movements there are occasional, but uncommon, and Beijing's defense operations in the island's ADIZ generally has been minimal in the past month.

Late on Saturday, the ministry said China had been conducting another “joint combat patrol” to “harass the airspace and sea around us”. It added the island had dispatched military assets to track the developments. The island reports such Chinese patrols a few times monthly as part of what the Taiwanese government says is an ongoing military pressure campaign.

Diplomatic Pressure

Japan has been experiencing increased strain from Beijing since the Japanese official made her remarks, with Beijing's diplomatic representative in Osaka 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 Beijing's military authorities declared that any Japanese intervention would be certain to collapse.

Warning for Citizens

On Friday, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it provided no details.

Multiple carriers from China announced this weekend that tickets to Japan could be cancelled without penalty.

Adding to the tensions, Beijing's administration on Sunday 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 detrimental effect on academic institutions in Japan. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to official data. They included more than 123,000 Chinese students – by far the single biggest group.

Media Response

Late on Saturday, a official press commentary 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 limited skirmish; it would probably involve other nations, including the US, and could quickly spiral into a large-scale conflict with severe repercussions.”

Policy Standpoints

The administration in Taipei says the island's residents alone determine their destiny. Japanese leaders have previously avoided publicly mentioning Taiwan when addressing potential conflicts, maintaining a “deliberate vagueness” also favoured by Japan's primary defense partner, the US.

Nevertheless, Beijing's governing 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, China has also been escalating its non-military activity and its rhetoric towards the island.