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China has sent its coast guard through the maritime area of the Diaoyu islands and military drones near outlying Japan's territory as China ramps up strains over the Japanese prime minister’s remarks regarding Taiwan.

Rights Enforcement Activities

On Sunday, the Chinese coast guard stated that its ships carried out a “rights enforcement patrol” through the territorial seas of the Senkaku, which are administered by Japan but also asserted as territory by China.

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

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the islands but the recent developments come amid an escalating political dispute after the Japanese prime minister, Sanae Takaichi, told parliament that if Beijing assaults democratically ruled Taiwan it could trigger a military response from Tokyo.

That provoked a furious reaction from Beijing, which has signalled it expects a withdrawal from the Japanese official.

Island's Stance

China claims Taiwan as its sovereign land and plans to incorporate it under what it terms “unification”. It has not ruled out the use of force. Taiwan’s government and citizens categorically refuse the idea of Beijing's control – preferring to maintain the status quo without formally announcing independence, but pledging to protect their sovereignty if necessary.

An attack or invasion by China would threaten to spiral into a regional or global conflict, possibly drawing in the United States and other partner nations including Japan, 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 probably the coast guard, operating around the territory over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs flying between the island and the Japan's territory off its north-east coast, seeming to travel particularly close to the nearby Japanese island. Chinese military transits there are occasional, but uncommon, and Chinese military activity in the island's ADIZ generally has been minimal in the past month.

Earlier this weekend, the defense officials said China had been conducting another “combined military exercise” to “test our defensive capabilities”. It noted the island had sent its own aircraft and ships to monitor the situation. Taiwan documents these operations a few times monthly as part of what the Taiwanese government says is an continuous strategic pressure.

Diplomatic Pressure

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

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

Multiple carriers from China announced this weekend that flights to Tokyo could be refunded or changed for free.

Adding to the tensions, China’s government on the weekend urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an volatile safety situation.

Although not an outright prohibition, a dramatic reduction in the number of Chinese students could have a negative impact on academic institutions in Japan. A historic high of over 336,000 international students were enrolled in Japanese schools last year, according to official data. They included more than 123,000 Chinese students – by far the largest demographic.

Official Commentary

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

“A conflict between Japan and China would not be a limited skirmish; it would likely draw in other nations, including the US, and could quickly spiral into a major confrontation with unimaginable consequences.”

Strategic Positions

The government of Taiwan says the island's residents alone determine their destiny. Japanese leaders have traditionally refrained from discussing the island openly when addressing potential conflicts, maintaining a “deliberate vagueness” also favoured by Japan's primary defense partner, the US.

However, China’s ruling Communist party says the unification of Taiwan with the mainland China is “unavoidable”, 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 the island.