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China has sent its maritime law enforcement through the maritime area of the Senkaku islands and unmanned aerial vehicles past outlying Japanese territory as Beijing escalates tensions over the Japan's leader's remarks regarding Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol stated that its vessels carried out a “lawful patrol operation” through the waters of the Senkaku, which are administered by Japan but also claimed by Beijing.

“China coast guard vessel 1307 formation performed surveillance within the maritime jurisdiction of the Senkaku islands. This was a legitimate rights enforcement activity undertaken by the China coast guard to uphold its rights and interests,” the statement said.

Diplomatic Spat

Beijing and Tokyo have consistently clashed around the disputed territory but the recent developments come amid an escalating political dispute after the Japan's leader, the Japanese official, told parliament that if Beijing assaults the self-governing island of Taiwan it could trigger a armed reaction from Tokyo.

That sparked an angry response from China, which has signalled it expects a retraction from the Japanese official.

Taiwan's Position

China claims the island as its sovereign land and plans to incorporate it under what it terms “unification”. It has not ruled out the military option. The island's administration and citizens overwhelmingly reject the prospect of Chinese rule – preferring to maintain the status quo without formally announcing independence, but vowing to defend themselves if required.

An attack or invasion by Beijing would risk escalating into a international confrontation, possibly drawing in the US and other allies including Tokyo, which has territory just 110km (68 miles) from Taiwan.

Military Activity

In Taiwan, the military authorities said on Sunday morning that it had detected 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was likely the maritime patrol, active near the island over the past 24 hours.

Official charts released showed up to three drones flying between Taiwan and the Japan's territory off its northeastern shoreline, seeming to travel unusually near to the nearby Japanese island. PLA movements there are occasional, but uncommon, and Beijing's defense operations 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 “test our defensive capabilities”. It noted Taiwan 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 continuous strategic pressure.

Political Strain

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

Beijing then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry declared that any Japanese intervention would be certain to collapse.

Travel and Education Advisory

Late last week, Beijing advised its people to avoid visiting Japan, prompting Tokyo to urge Beijing to take “suitable actions”, though it provided no details.

Three Chinese airlines said on Saturday that flights to Tokyo 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.

While the advice does not amount to a ban, a significant decrease in the number of Chinese students 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 featured over 123,000 learners from China – by far the single biggest group.

Media Response

Earlier this weekend, a Chinese state media editorial charged the Japanese official with performing a political stunt that was “both reckless and fundamentally flawed”.

“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 major confrontation with unimaginable consequences.”

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Japanese leaders have previously avoided discussing the island openly when discussing such scenarios, maintaining a “deliberate vagueness” also favoured by Tokyo’s main security ally, the United States.

However, Beijing's governing party says the unification of Taiwan with the mainland China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, Beijing has also been increasing its political operations and its statements towards the island.