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Beijing has sent its coast guard into the maritime area of the Senkaku islands and military drones near outlying Japan's territory as China ramps up strains over the Japan's leader's remarks regarding Taiwan.

Patrol Operations

This past Sunday, the Chinese coast guard stated that its ships carried out a “lawful patrol operation” through the waters of the Senkaku, 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 conducted by the Chinese maritime authorities to protect its sovereign claims,” the statement said.

Bilateral Tensions

China and Japan have repeatedly faced off around the disputed territory but the latest activity come amid an intensifying diplomatic spat after the Japan's leader, the Japanese official, addressed lawmakers that if Beijing assaults the self-governing island of Taiwan it might provoke a military response from Japan.

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

Island's Stance

Beijing asserts Taiwan as its own territory and intends to annex it under what it describes as “unification”. It has not ruled out the use of force. Taiwan’s government and people categorically refuse the idea of Beijing's control – preferring to maintain the status quo without explicitly declaring themselves independent, but vowing to defend themselves if necessary.

An military assault by China would risk escalating into a international confrontation, potentially involving the US and other partner nations including Tokyo, which has land just 68 miles from the island.

Military Activity

On the island, the military authorities reported this weekend that it had observed three dozen PLA planes, multiple naval vessels and one “official” ship, which was probably the maritime patrol, operating around the territory over the past 24 hours.

Official charts released showed up to three drones 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 uncommon, and Chinese military activity in Taiwan’s air defence identification zone generally has been minimal in the past month.

Late on Saturday, the defense officials said Beijing had been carrying out another “joint combat patrol” to “harass the airspace and sea around us”. It added the island had dispatched military assets to track the developments. Taiwan documents these operations a few times monthly as part of what Taipei says is an continuous strategic pressure.

Political Strain

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

China then called in Japan's diplomat for the first occasion since 2023, and Beijing's military authorities stated that any Japanese intervention would be certain to collapse.

Warning for Citizens

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

Multiple carriers from China announced this weekend that flights to Tokyo could be refunded or changed for free.

In another escalation, Beijing's administration on Sunday advised students to rethink education plans in Japan, citing what it characterized as an volatile safety situation.

While the advice does not amount to a ban, a dramatic reduction in the number of Chinese students could have a negative impact on academic institutions in Japan. A record 336,708 foreign nationals 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.

Official Commentary

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

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

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 discussing such scenarios, maintaining a “deliberate vagueness” also preferred by Japan's primary defense partner, the United States.

Nevertheless, 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, China has also been increasing its political operations and its rhetoric towards the island.