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China has sent its coast guard through the waters of the Diaoyu islands and military drones near outlying Japan's territory as China ramps up strains following the Japan's leader's comments regarding Taiwan.

Patrol Operations

This past Sunday, the Chinese coast guard announced that its vessels conducted a “rights enforcement patrol” through the waters of the Diaoyu islands, which are under the control of 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 lawful patrol operation conducted by the Chinese maritime authorities to uphold its rights and interests,” the statement said.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the disputed territory but the latest activity occur during an escalating political dispute after the Japanese prime minister, Sanae Takaichi, told parliament that if China attack democratically ruled Taiwan it could trigger a armed reaction from Tokyo.

That provoked a furious reaction from Beijing, which has indicated it demands a retraction from the Japanese official.

Taiwan's Position

China claims Taiwan as its own territory and plans to incorporate it under what it describes as “reunification”. It has left open the military option. Taiwan’s government and citizens 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 attack or invasion by Beijing would threaten to spiral into a regional or global conflict, possibly drawing in the US and other partner nations including Tokyo, which has land just 68 miles from the island.

Defense Operations

In Taiwan, the defence ministry said on Sunday morning that it had detected 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was likely the maritime patrol, operating around the territory over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near Taiwan and the Japan's territory off its northeastern shoreline, seeming to travel particularly close to Yonaguni. PLA movements there are not rare, but uncommon, and Chinese military activity in the island's ADIZ generally has been low in the past month.

Late on Saturday, the defense officials said China had been carrying out another “combined military exercise” to “test our defensive capabilities”. It added Taiwan had dispatched military assets to monitor the situation. Taiwan reports such Chinese patrols a few times monthly as part of what the Taiwanese government says is an ongoing military pressure campaign.

Political Strain

Japan has been facing mounting pressure from China since the Japanese official made her comments, 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 called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry declared that any Japanese intervention would be certain to collapse.

Travel and Education Advisory

Late last week, China advised its people to avoid visiting Japan, prompting Tokyo to urge Beijing to take “suitable actions”, though it provided no details.

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

In another escalation, Beijing's administration on the weekend advised students to rethink education plans in Japan, citing what it described as an unstable security environment.

Although not an outright prohibition, a significant decrease in the population of learners from China could have a detrimental effect on Japanese universities. 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.

Media Response

Earlier this weekend, a Chinese state media editorial accused Takaichi of staging 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 probably involve other powers, including the United States, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Strategic Positions

The government of Taiwan says only its people can decide its future. Japanese leaders have previously avoided publicly mentioning Taiwan when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the US.

However, Beijing's governing party says the unification of Taiwan with the mainland China is “inevitable”, and portrays dissent as provocative. As it moves towards being capable of military annexation, China has also been escalating its non-military activity and its rhetoric towards Taiwan.