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Beijing has sent its coast guard into the waters of the Senkaku islands and military drones past remote Japan's territory as China escalates strains following the Japan's leader's remarks regarding Taiwan.

Patrol Operations

On Sunday, the China's maritime patrol stated that its ships carried out a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Tokyo but also claimed by Beijing.

“China coast guard vessel 1307 formation performed surveillance within the territorial waters of the Diaoyu islands. This was a legitimate rights enforcement activity conducted by the Chinese maritime authorities to protect its sovereign claims,” officials declared.

Diplomatic Spat

China and Japan have consistently clashed around the disputed territory but the latest activity occur during an escalating political dispute after the Japan's leader, Sanae Takaichi, told parliament that if Beijing assaults democratically ruled Taiwan it might provoke a military response from Japan.

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

Island's Stance

China claims Taiwan 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 citizens overwhelmingly reject the prospect of Chinese rule – preferring to maintain the current situation without formally announcing independence, but pledging to protect their sovereignty if necessary.

An military assault by Beijing would risk escalating into a regional or global conflict, possibly drawing in the United States and other partner nations including Japan, which has territory just 68 miles from Taiwan.

Military Activity

On the island, the defence ministry reported this weekend that it had detected three dozen PLA planes, multiple naval vessels and one “official” ship, which was likely the maritime patrol, 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 northeastern shoreline, appearing to go particularly close to Yonaguni. PLA movements there are not rare, but uncommon, and Beijing's defense operations in the island's ADIZ generally has been low in recent weeks.

Late on Saturday, the ministry said China had been carrying out another “combined military exercise” to “test our defensive capabilities”. It added the island had sent its own aircraft and ships to track the developments. Taiwan reports such Chinese patrols a few times monthly as part of what Taipei says is an ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been facing mounting pressure from China since Takaichi made her remarks, with China’s consul general in Osaka triggering an official complaint from Tokyo by stating that “those who interfere will face consequences”.

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

Travel and Education Advisory

On Friday, China cautioned its citizens against travelling to Japan, leading Japan to request China to take “suitable actions”, though it did not elaborate.

Multiple carriers from China said on Saturday that flights to Tokyo could be cancelled without penalty.

Adding to the tensions, China’s government on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it described as an unstable security environment.

While the advice does not amount to a ban, a significant decrease in the population of learners from China 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 largest demographic.

Official Commentary

Earlier this weekend, a Chinese state media editorial accused Takaichi of staging a political stunt that was “both reckless and fundamentally flawed”.

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would probably involve other powers, including the United States, and could rapidly escalate to a large-scale conflict with severe repercussions.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Officials in Tokyo have traditionally refrained from publicly mentioning Taiwan when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the US.

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