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

Rights Enforcement Activities

This past Sunday, the China's maritime patrol announced that its ships carried out a “rights enforcement patrol” through the territorial seas of the Diaoyu islands, which are under the control of Japan but also claimed by China.

“China coast guard vessel 1307 formation conducted patrols within the territorial waters of the Senkaku islands. This was a legitimate rights enforcement activity undertaken by the China coast guard to uphold its rights and interests,” the statement said.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the disputed territory but the recent developments come amid an intensifying diplomatic spat after the Japan's leader, Sanae Takaichi, told parliament that if Beijing assaults democratically ruled Taiwan it could trigger a military response from Japan.

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

Island's Stance

Beijing asserts the island as its own territory and plans to incorporate it under what it terms “reunification”. It has left open the use of force. Taiwan’s government and people categorically refuse the idea of Beijing's control – choosing to preserve the status quo without explicitly declaring themselves independent, but vowing to defend themselves if required.

An military assault by Beijing would risk escalating into a regional or global conflict, possibly drawing in the United States and other allies including Japan, which has territory just 110km (68 miles) from Taiwan.

Defense Operations

In Taiwan, the military authorities said on Sunday morning that it had observed 30 Chinese military aircraft, multiple naval vessels and one “official” ship, which was likely the maritime patrol, active near the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs flying between Taiwan and the Japanese islands off its north-east coast, seeming to travel particularly close to the nearby Japanese island. PLA movements there are not rare, but infrequent, and Chinese military activity in Taiwan’s air defence identification zone generally has been minimal in recent weeks.

Late on Saturday, the defense officials said China had been conducting another “combined military exercise” to “harass the airspace and sea around us”. It noted 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 continuous strategic pressure.

Political Strain

Tokyo has been facing mounting pressure from Beijing since the Japanese official made her remarks, with China’s consul general in the Japanese city prompting a formal protest from Tokyo by commenting 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.

Warning for Citizens

On Friday, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “suitable actions”, though it did not elaborate.

Three Chinese airlines announced this weekend that tickets to Japan could be refunded or changed for free.

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 education statistics. They featured over 123,000 learners from China – by far the largest demographic.

Official Commentary

Earlier this weekend, a official press commentary accused Takaichi of staging a political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A clash between Tokyo and Beijing would not be a limited skirmish; it would likely draw in other nations, including the United States, and could rapidly escalate to a major confrontation with unimaginable consequences.”

Strategic Positions

The government of Taiwan says only its people can decide its future. Japanese leaders have traditionally refrained from discussing the island openly when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the United States.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “inevitable”, 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.