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Beijing has deployed its maritime law enforcement through the maritime area of the Diaoyu islands and military drones past remote Japan's territory as China escalates strains following the Japanese prime minister’s comments regarding Taiwan.

Patrol Operations

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

“China coast guard vessel 1307 formation conducted patrols within the maritime jurisdiction of the Diaoyu 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

China and Japan have consistently clashed around the disputed territory but the recent developments occur during an intensifying diplomatic spat after the Japan's leader, the Japanese official, told parliament that if China attack the self-governing island of Taiwan it could trigger a armed reaction from Japan.

That sparked an angry response from China, which has indicated it demands a retraction from Takaichi.

Island's Stance

China claims Taiwan as its sovereign land and plans to incorporate it under what it terms “reunification”. It has not ruled out the use of force. Taiwan’s government and citizens categorically refuse the idea of Beijing's control – choosing to preserve the status quo without formally announcing independence, but vowing to defend themselves if necessary.

An attack or invasion by Beijing would threaten to spiral into a international confrontation, possibly drawing in the United States and other allies including Tokyo, which has land just 68 miles from Taiwan.

Military Activity

In Taiwan, the defence ministry said on Sunday morning that it had detected three dozen PLA planes, multiple naval vessels and one “official” ship, which was probably the maritime patrol, active near the island over the previous day.

Maps provided by the ministry showed up to multiple UAVs operating near Taiwan and the Japan's territory off its north-east coast, appearing to go unusually near to Yonaguni. Chinese military transits there are occasional, but infrequent, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been minimal in the past month.

Earlier this weekend, the ministry said Beijing had been carrying out another “combined military exercise” to “harass the airspace and sea around us”. It added Taiwan had dispatched military assets to monitor the situation. The island documents these operations a couple of times a month as part of what the Taiwanese government says is an ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been experiencing increased strain from Beijing since Takaichi made her remarks, with Beijing's diplomatic representative in Osaka triggering an official complaint from Japan 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.

Warning for Citizens

On Friday, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, 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 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 dramatic reduction in the number of Chinese students could have a detrimental effect on academic institutions in Japan. A record 336,708 foreign nationals were studying in Japan last year, according to education statistics. They featured over 123,000 learners from China – by far the single biggest group.

Media Response

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

“A conflict between Japan and China would not be a small-scale encounter; it would probably involve other nations, including the United States, 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. Officials in Tokyo have previously avoided publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also preferred by Japan's primary defense partner, the US.

However, Beijing's governing party says the unification of Taiwan with the People’s Republic of China is “inevitable”, and casts any opposition to it as escalatory. As it advances toward potential armed takeover, Beijing has also been increasing its political operations and its statements towards the island.