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China has deployed its coast guard through the waters of the Diaoyu islands and military drones past remote Japan's territory as China ramps up tensions over the Japan's leader's remarks regarding Taiwan.

Rights Enforcement Activities

This past Sunday, the China's maritime patrol announced that its ships conducted a “lawful patrol operation” through the territorial seas of the Senkaku, which are administered by Tokyo but also asserted as territory by Beijing.

“Chinese maritime patrol unit 1307 conducted patrols within the territorial waters of the Diaoyu islands. This was a legitimate rights enforcement activity conducted by the Chinese maritime authorities to uphold its rights and interests,” the statement said.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the islands but the latest activity occur during an intensifying diplomatic spat after the Japan's leader, the Japanese official, addressed lawmakers that if China attack the self-governing island of Taiwan it might provoke a military response from Japan.

That provoked a furious reaction from China, which has indicated it demands a retraction from Takaichi.

Island's Stance

Beijing asserts Taiwan as its own territory and plans to incorporate it under what it terms “unification”. It has left open the military option. Taiwan’s government and people categorically refuse the prospect of Chinese rule – choosing to preserve the current situation without explicitly declaring themselves independent, but vowing to defend themselves if necessary.

An military assault by China would threaten to spiral into a regional or global conflict, possibly drawing in the United States and other allies including Tokyo, which has land just 110km (68 miles) from the island.

Defense Operations

In Taiwan, the defence ministry said on Sunday morning that it had detected 30 Chinese military aircraft, seven navy ships and one “official” ship, which was likely the maritime patrol, operating around the island over the previous day.

Official charts released 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 not rare, but infrequent, and Chinese military activity in the island's ADIZ generally has been low in recent weeks.

Earlier this weekend, the defense officials said Beijing had been carrying out another “combined military exercise” to “harass the airspace and sea around us”. It noted the island had sent its own aircraft and ships to track the developments. The island reports such Chinese patrols a few times monthly as part of what Taipei says is an continuous strategic pressure.

Political Strain

Tokyo has been facing mounting pressure from China since the Japanese official made her comments, with China’s consul general in the Japanese city prompting a formal protest from Japan by commenting that “those who interfere will face consequences”.

Beijing then called in Japan's diplomat for the first occasion since 2023, and Beijing's military authorities declared that any Tokyo's involvement would be doomed to fail.

Warning for Citizens

On Friday, Beijing cautioned its citizens against travelling to Japan, leading Japan to request China to take “suitable actions”, though it provided no details.

Three Chinese airlines said on Saturday that tickets to Japan could be refunded or changed for free.

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 Japanese universities. A historic high of over 336,000 international students were enrolled in Japanese schools 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 charged the Japanese official with performing a political stunt that was “both reckless and fundamentally flawed”.

“A clash between Tokyo and Beijing would not be a small-scale encounter; it would likely draw in other powers, including the United States, and could rapidly escalate to a large-scale conflict with severe repercussions.”

Policy Standpoints

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

Nevertheless, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “inevitable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been increasing its political operations and its statements towards the island.