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Beijing has deployed its maritime law enforcement into the maritime area of the Diaoyu islands and military drones near remote Japan's territory as China ramps up tensions following the Japanese prime minister’s remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard announced that its vessels conducted a “lawful patrol operation” through the waters of the Diaoyu islands, which are under the control of Tokyo but also claimed by Beijing.

“Chinese maritime patrol unit 1307 performed surveillance within the maritime jurisdiction of the Senkaku islands. This was a legitimate rights enforcement activity undertaken by the Chinese maritime authorities to protect its sovereign claims,” the statement said.

Diplomatic Spat

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

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

Island's Stance

China claims the island as its sovereign land and intends to annex it under what it terms “unification”. It has left open the use of force. Taiwan’s government and citizens categorically refuse the prospect of Chinese rule – choosing to preserve the status quo without formally announcing independence, but pledging to protect their sovereignty if required.

An attack or invasion by Beijing would risk escalating into a regional or global conflict, possibly drawing in the United States and other partner nations including Japan, which has territory just 68 miles from the island.

Military Activity

In Taiwan, the military authorities reported this weekend that it had detected 30 Chinese military aircraft, seven navy ships and one “official” ship, which was likely the maritime patrol, active near the territory over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs flying between Taiwan and the Japanese islands off its northeastern shoreline, seeming to travel particularly close to Yonaguni. PLA movements there are occasional, but uncommon, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been low in the past month.

Late on Saturday, the ministry said Beijing had been conducting another “combined military exercise” to “test our defensive capabilities”. It added Taiwan had sent its own aircraft and ships to monitor the situation. The island 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 “those who interfere will face consequences”.

China then called in Japan's diplomat for the first occasion since 2023, and China’s defence ministry stated that any Japanese intervention would be doomed to fail.

Warning for Citizens

On Friday, China advised its people to avoid visiting Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it did not elaborate.

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

In another escalation, China’s government 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 dramatic reduction in the number of Chinese students could have a negative impact on Japanese universities. A historic high of over 336,000 international students 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.

Media Response

Late on Saturday, a Chinese state media editorial charged the Japanese official with performing a diplomatic maneuver that was “both reckless and fundamentally flawed”.

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would probably involve other powers, including the United States, and could quickly spiral into a large-scale conflict with severe repercussions.”

Strategic Positions

The government of Taiwan says the island's residents alone determine their destiny. Officials in Tokyo have traditionally refrained from publicly mentioning Taiwan 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 “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 the island.