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China has deployed its maritime law enforcement into the waters of the Diaoyu islands and unmanned aerial vehicles near outlying Japanese territory as Beijing ramps up strains following the Japan's leader's comments regarding the island of Taiwan.

Patrol Operations

This past Sunday, the Chinese coast guard announced that its vessels carried out a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Japan 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 undertaken by the Chinese maritime authorities to uphold its rights and interests,” officials declared.

Diplomatic Spat

Beijing and Tokyo have consistently clashed around the disputed territory but the latest activity come amid an intensifying diplomatic spat after the Japanese prime minister, the Japanese official, addressed lawmakers that if Beijing assaults democratically ruled Taiwan it might provoke a military response from Japan.

That provoked a furious reaction from China, which has signalled it expects a retraction from Takaichi.

Island's Stance

Beijing asserts Taiwan as its sovereign land and plans to incorporate it under what it describes as “reunification”. It has not ruled out the military option. The island's administration and citizens overwhelmingly reject the prospect of Chinese rule – choosing to preserve the status quo without formally announcing independence, but pledging to protect their sovereignty if required.

An military assault by Beijing 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 110km (68 miles) from the island.

Military Activity

On the island, the military authorities reported this weekend that it had observed three dozen PLA planes, seven navy ships and one government vessel, which was probably the coast guard, active near the island over the previous day.

Official charts released showed up to multiple UAVs flying between Taiwan 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 not rare, but uncommon, and Chinese military activity in Taiwan’s air defence identification zone generally has been low in the past month.

Late on Saturday, the defense officials said Beijing had been carrying out another “joint combat patrol” to “harass the airspace and sea around us”. It noted Taiwan had dispatched military assets to monitor the situation. Taiwan documents these operations 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 Beijing since the Japanese official made her comments, with Beijing's diplomatic representative in Osaka prompting a formal protest from Japan by stating that “those who interfere will face consequences”.

China then summoned the Japanese ambassador 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

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

Three Chinese airlines said on Saturday that tickets to Japan could be refunded or changed for free.

In another escalation, Beijing's administration on Sunday 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 population of learners from China could have a negative impact on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to official data. They featured over 123,000 learners from China – by far the largest demographic.

Media Response

Late on Saturday, a Chinese state media editorial accused Takaichi of staging a diplomatic maneuver that was “both reckless and fundamentally flawed”.

“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 large-scale conflict with unimaginable consequences.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Officials in Tokyo have previously avoided publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Tokyo’s main security ally, the US.

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