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Beijing has deployed its coast guard into the maritime area of the Diaoyu islands and military drones past outlying Japanese territory as Beijing escalates tensions following the Japanese prime minister’s comments regarding Taiwan.

Rights Enforcement Activities

On Sunday, the Chinese coast guard stated that its ships carried out a “rights enforcement patrol” through the territorial seas of the Diaoyu islands, which are administered by Japan but also asserted as territory by China.

“Chinese maritime patrol unit 1307 conducted patrols within the maritime jurisdiction of the Senkaku islands. This was a legitimate rights enforcement activity conducted by the China coast guard 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 intensifying diplomatic spat after the Japanese prime minister, the Japanese official, addressed lawmakers that if China attack democratically ruled Taiwan it might provoke a military response from Japan.

That sparked an angry response from Beijing, which has indicated it demands a withdrawal from Takaichi.

Taiwan's Position

Beijing asserts the island as its own territory and intends to annex it under what it terms “reunification”. It has left open the use of force. The island's administration and citizens categorically refuse the idea of Beijing's control – choosing to preserve the status quo without formally announcing independence, but vowing to defend themselves if required.

An attack or invasion by China would threaten to spiral into a regional or global conflict, potentially involving the United States and other allies including Tokyo, which has territory just 68 miles from Taiwan.

Military Activity

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 coast guard, operating around the territory over the past 24 hours.

Official charts released showed up to multiple UAVs flying between the island and the Japan's territory off its northeastern shoreline, seeming to travel unusually near to Yonaguni. Chinese military transits there are not rare, but infrequent, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been low in recent weeks.

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

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 commenting that “the dirty head that sticks itself out must be cut off”.

Beijing then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry stated that any Tokyo's involvement would be certain to collapse.

Travel and Education Advisory

On Friday, China cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it provided no details.

Multiple carriers from China announced this weekend 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 volatile safety situation.

Although not an outright prohibition, a significant decrease in the population of learners from China could have a negative impact on academic institutions in Japan. A historic high of over 336,000 international students were studying in Japan last year, according to education statistics. They included more than 123,000 Chinese students – by far the largest demographic.

Media Response

Earlier this weekend, a official press commentary charged the Japanese official with performing a political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A conflict between Japan and China would not be a limited skirmish; it would probably involve other powers, including the US, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Policy Standpoints

The administration in Taipei says only its people can decide its future. Officials in Tokyo have traditionally refrained from discussing the island openly when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Tokyo’s main security ally, the United States.

Nevertheless, Beijing's governing party says the incorporation of the island with the mainland China is “inevitable”, 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 the island.