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China has deployed its maritime law enforcement into the waters of the Senkaku islands and unmanned aerial vehicles past outlying Japan's territory as Beijing escalates tensions following the Japan's leader's comments regarding the island of Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol stated that its vessels carried out a “rights enforcement patrol” through the waters of the Senkaku, which are administered by Tokyo but also asserted as territory by China.

“China coast guard vessel 1307 formation performed surveillance within the maritime jurisdiction of the Diaoyu islands. This was a lawful patrol operation conducted by the China coast guard to uphold its rights and interests,” the statement said.

Diplomatic Spat

China and Japan have repeatedly faced off around the islands but the latest activity occur during an escalating political dispute after the Japan's leader, 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 withdrawal from Takaichi.

Taiwan's Position

China claims Taiwan as its own territory and plans to incorporate it under what it describes as “unification”. It has left open the military option. The island's administration and people overwhelmingly reject the idea of Beijing's control – preferring to maintain the current situation without explicitly declaring themselves independent, but vowing to defend themselves if necessary.

An attack or invasion by China would risk escalating into a regional or global conflict, possibly drawing in the US and other allies including Japan, which has land just 110km (68 miles) from the island.

Defense Operations

In Taiwan, the defence ministry said on Sunday morning that it had detected three dozen PLA planes, multiple naval vessels and one government vessel, which was likely the coast guard, operating around the territory over the past 24 hours.

Official charts released showed up to three drones flying between Taiwan and the Japanese islands off its north-east coast, appearing to go unusually near to the nearby Japanese island. Chinese military transits there are not rare, but infrequent, 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 conducting another “combined military exercise” to “test our defensive capabilities”. It noted the island had dispatched military assets to track the developments. Taiwan documents these operations a couple of times a month as part of what the Taiwanese government says is an continuous strategic pressure.

Diplomatic Pressure

Tokyo has been experiencing increased strain from Beijing since the Japanese official made her comments, with China’s consul general in the Japanese city prompting a formal protest from Tokyo by commenting that “the dirty head that sticks itself out must be cut off”.

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

Warning for Citizens

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 tickets to Japan could be cancelled without penalty.

Adding to the tensions, Beijing's administration on the weekend advised students to rethink education plans in Japan, citing what it described as an unstable security environment.

Although not an outright prohibition, a dramatic reduction in the number of Chinese students could have a detrimental effect on academic institutions in Japan. A historic high of over 336,000 international students were enrolled in Japanese schools last year, according to education statistics. They included more than 123,000 Chinese students – by far the single biggest group.

Official Commentary

Late on Saturday, a Chinese state media editorial accused Takaichi of staging a diplomatic maneuver that was “not just dangerously provocative but fundamentally perverse”.

“A clash between Tokyo and Beijing would not be a limited skirmish; it would probably involve other nations, including the US, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Policy Standpoints

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, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its rhetoric towards the island.