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China has deployed its maritime law enforcement through the waters of the Senkaku islands and military drones past remote Japanese territory as Beijing ramps up tensions over the Japan's leader's comments regarding Taiwan.

Patrol Operations

This past Sunday, the Chinese coast guard stated that its vessels carried out a “lawful patrol operation” through the territorial seas of the Senkaku, which are administered by Japan but also claimed by China.

“Chinese maritime patrol unit 1307 performed surveillance within the maritime jurisdiction of the Senkaku islands. This was a lawful patrol operation undertaken 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 latest activity occur during an escalating political dispute after the Japanese prime minister, the Japanese official, told parliament that if Beijing assaults democratically ruled Taiwan it might provoke a armed reaction from Japan.

That sparked an angry response from China, which has signalled it expects a retraction from Takaichi.

Island's Stance

China claims Taiwan as its own territory and intends to annex it under what it terms “unification”. It has not ruled out the use of force. The island's administration and people categorically refuse the idea of Beijing's control – choosing to preserve the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if required.

An military assault by China would threaten to spiral into a regional or global conflict, potentially involving the US and other allies including Tokyo, which has land just 110km (68 miles) from Taiwan.

Defense Operations

On the island, the defence ministry said on Sunday morning that it had observed 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was probably the maritime patrol, operating around the island over the previous day.

Maps provided by the ministry showed up to multiple UAVs flying between 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 low in the past month.

Earlier this weekend, the ministry said China had been conducting another “joint combat patrol” to “test our defensive capabilities”. It noted Taiwan had sent its own aircraft and ships to track the developments. Taiwan documents these operations a few times monthly as part of what Taipei says is an ongoing military pressure campaign.

Political Strain

Tokyo has been facing mounting pressure from China since the Japanese official made her comments, with Beijing's diplomatic representative in the Japanese city triggering an official complaint from Japan 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 doomed to fail.

Travel and Education Advisory

Late last week, Beijing 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 tickets to Japan could be refunded or changed for free.

Adding to the tensions, China’s government on Sunday advised students to rethink education plans in Japan, citing what it described 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 included more than 123,000 Chinese students – by far the single biggest group.

Official Commentary

Late on Saturday, a official press commentary charged the Japanese official with performing a diplomatic maneuver that was “not just dangerously provocative but fundamentally perverse”.

“A conflict between Japan and China would not be a small-scale encounter; it would likely draw in other nations, including the US, and could quickly spiral into a large-scale conflict with severe repercussions.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Japanese leaders have previously avoided discussing the island openly when discussing such scenarios, maintaining a “deliberate vagueness” also preferred by Tokyo’s main security ally, the United States.

However, Beijing's governing party says the incorporation of the island with the People’s Republic of China is “unavoidable”, and casts any opposition to it as escalatory. As it moves towards being capable of military annexation, China has also been increasing its political operations and its rhetoric towards Taiwan.