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Beijing has deployed its coast guard through the maritime area of the Diaoyu islands and unmanned aerial vehicles near remote Japanese territory as Beijing ramps up strains following the Japan's leader's remarks regarding the island of Taiwan.

Patrol Operations

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

“Chinese maritime patrol unit 1307 conducted patrols within the maritime jurisdiction of the Diaoyu islands. This was a lawful patrol operation undertaken by the China coast guard to protect its sovereign claims,” officials declared.

Diplomatic Spat

China and Japan have consistently clashed around the disputed territory but the recent developments come amid an escalating political dispute after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if China attack democratically ruled Taiwan it might provoke a armed reaction from Japan.

That provoked a furious reaction from China, which has indicated it demands a retraction from the Japanese official.

Taiwan's Position

China claims the island as its own territory and plans to incorporate it under what it terms “unification”. It has not ruled out the military option. Taiwan’s government and people overwhelmingly reject the idea of Beijing's control – choosing to preserve the current situation without explicitly declaring themselves independent, but vowing to defend themselves if required.

An attack or invasion by Beijing would risk escalating into a international confrontation, potentially involving the US and other partner nations including Tokyo, which has land just 68 miles from the island.

Defense Operations

In Taiwan, the military authorities reported this weekend that it had observed three dozen PLA planes, multiple naval vessels and one government vessel, which was likely the coast guard, active near the island over the past 24 hours.

Official charts released showed up to multiple UAVs flying between Taiwan and the Japan's territory off its north-east coast, appearing to go particularly close to Yonaguni. Chinese military transits there are not rare, but infrequent, and Beijing's defense operations in the island's ADIZ generally has been minimal in recent weeks.

Late on Saturday, the ministry said Beijing had been carrying out another “joint combat patrol” to “test our defensive capabilities”. It noted Taiwan had sent its own aircraft and ships to monitor the situation. Taiwan documents these operations a few times monthly as part of what Taipei says is an continuous strategic pressure.

Diplomatic Pressure

Tokyo has been experiencing increased strain from Beijing since Takaichi made her remarks, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Tokyo by stating that “the dirty head that sticks itself out must be cut off”.

China then summoned the Japanese ambassador for the first occasion since 2023, and China’s defence ministry declared that any Tokyo's involvement would be doomed to fail.

Travel and Education Advisory

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

Multiple carriers from China said on Saturday that tickets to Japan could be cancelled without penalty.

In another escalation, China’s government on the weekend 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 number of Chinese students could have a negative impact 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 largest demographic.

Media Response

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 nations, including the United States, and could rapidly escalate to a major confrontation with severe repercussions.”

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Officials in Tokyo have previously avoided discussing the island openly when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the United States.

However, Beijing's governing party says the incorporation of the island with the mainland China is “inevitable”, and portrays dissent as provocative. As it moves towards being capable of military annexation, Beijing has also been escalating its non-military activity and its statements towards Taiwan.