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China has deployed its maritime law enforcement through the maritime area of the Senkaku islands and military drones past remote Japanese territory as China ramps up strains over the Japanese prime minister’s remarks regarding the island of Taiwan.

Rights Enforcement Activities

On Sunday, the China's maritime patrol stated that its ships conducted a “rights enforcement patrol” through the waters of the Diaoyu islands, which are administered by Japan but also asserted as territory by Beijing.

“China coast guard vessel 1307 formation conducted patrols within the territorial waters of the Diaoyu islands. This was a lawful patrol operation undertaken by the China coast guard to uphold its rights and interests,” officials declared.

Diplomatic Spat

China and Japan have consistently clashed around the islands but the recent developments come amid 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 might provoke a military response from Tokyo.

That sparked an angry response from Beijing, which has signalled it expects a withdrawal from the Japanese official.

Taiwan's Position

China claims the island as its own territory and intends to annex it under what it terms “unification”. It has left open the military option. Taiwan’s government and citizens categorically refuse the idea of Beijing's control – preferring to maintain the current situation without explicitly declaring themselves independent, but pledging to protect their sovereignty if required.

An military assault by Beijing would threaten to spiral into a international confrontation, potentially involving the US and other allies including Tokyo, which has territory just 110km (68 miles) from the island.

Military Activity

On the island, the defence ministry said on Sunday morning that it had observed three dozen PLA planes, seven navy ships and one government vessel, which was probably the maritime patrol, operating around the territory over the previous day.

Official charts released showed up to multiple UAVs flying between the island and the Japanese islands off its north-east coast, appearing to go particularly close to Yonaguni. PLA movements there are occasional, but uncommon, and Chinese military activity 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 “combined military exercise” to “test our defensive capabilities”. It added Taiwan had sent its own aircraft and ships to track the developments. Taiwan reports such Chinese patrols a couple of times a month as part of what Taipei says is an continuous strategic pressure.

Political Strain

Tokyo has been facing mounting pressure from Beijing since the Japanese official made her remarks, with Beijing's diplomatic representative in Osaka prompting a formal protest 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.

Travel and Education Advisory

Late last week, Beijing advised its people to avoid visiting Japan, leading Japan to request China to take “suitable actions”, though it did not elaborate.

Multiple carriers from China announced this weekend that flights to Tokyo could be cancelled without penalty.

Adding to the tensions, China’s government on the weekend 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 negative impact on Japanese universities. 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.

Official Commentary

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 clash between Tokyo and Beijing would not be a limited skirmish; it would probably involve other nations, including the US, and could quickly spiral into a major confrontation with unimaginable consequences.”

Policy Standpoints

The administration in Taipei says the island's residents alone determine their destiny. Officials in Tokyo have previously avoided discussing the island openly when addressing potential conflicts, maintaining a “deliberate vagueness” also preferred by Tokyo’s main security ally, the US.

However, China’s ruling Communist party says the unification of Taiwan with the mainland China is “inevitable”, and casts any opposition to it as escalatory. As it moves towards being capable of military annexation, Beijing has also been escalating its non-military activity and its rhetoric towards the island.