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China has deployed its coast guard into the waters of the Senkaku islands and unmanned aerial vehicles past outlying Japan's territory as Beijing escalates strains following the Japanese prime minister’s comments regarding the island of Taiwan.

Rights Enforcement Activities

On Sunday, the Chinese coast guard announced that its vessels conducted a “rights enforcement patrol” through the territorial seas of the Diaoyu islands, which are under the control of Tokyo but also asserted as territory by China.

“Chinese maritime patrol unit 1307 conducted patrols within the maritime jurisdiction of the Diaoyu islands. This was a legitimate rights enforcement activity conducted by the Chinese maritime authorities to protect its sovereign claims,” officials declared.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the disputed territory but the latest activity come amid an escalating political dispute after the Japanese prime minister, the Japanese official, addressed lawmakers that if China attack democratically ruled Taiwan it might provoke a armed reaction from Japan.

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

Island's Stance

Beijing asserts the island as its own territory and plans to incorporate it under what it describes as “unification”. It has not ruled out the use of force. Taiwan’s government and people overwhelmingly reject 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 attack or invasion by Beijing would risk escalating into a international confrontation, potentially involving the US and other allies including Tokyo, which has land just 68 miles from Taiwan.

Defense Operations

On the island, the defence ministry said on Sunday morning that it had detected three dozen PLA planes, 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 three drones operating near Taiwan and the Japan's territory off its north-east coast, seeming to travel particularly close to Yonaguni. PLA movements there are occasional, but infrequent, 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 “harass the airspace and sea around us”. It added the island had sent its own aircraft and ships to track the developments. The island reports such Chinese patrols a couple of times a month as part of what the Taiwanese government says is an continuous strategic pressure.

Political Strain

Tokyo has been facing mounting pressure from China since the Japanese official made her remarks, with China’s consul general in Osaka prompting a formal protest from Japan 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 declared that any Tokyo's involvement would be doomed to fail.

Travel and Education Advisory

Late last week, Beijing advised its people to avoid visiting Japan, leading Japan to request China to take “appropriate measures”, though it provided no details.

Three Chinese airlines said on Saturday that tickets to Japan could be cancelled without penalty.

Adding to the tensions, Beijing's administration on the weekend advised students to rethink education plans in Japan, citing what it characterized as an volatile safety situation.

Although not an outright prohibition, a significant decrease in the number of Chinese students could have a detrimental effect on Japanese universities. A record 336,708 foreign nationals were enrolled in Japanese schools last year, according to official data. They included more than 123,000 Chinese students – by far the single biggest group.

Official Commentary

Late on Saturday, a Chinese state media editorial accused Takaichi of staging a political stunt 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 United States, and could rapidly escalate to a large-scale conflict with severe repercussions.”

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 addressing potential conflicts, maintaining a “deliberate vagueness” also favoured by Tokyo’s main security ally, the US.

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