Beijing Dispatches Maritime Patrol Vessels to Diaoyu Islands Amid Dispute with Japan

Beijing has sent its maritime law enforcement into the maritime area of the Diaoyu islands and military drones past outlying Japanese territory as Beijing ramps up strains following the Japanese prime minister’s remarks regarding Taiwan.

Patrol Operations

On Sunday, the Chinese coast guard announced that its vessels conducted a “lawful patrol operation” through the territorial seas of the Senkaku, which are administered by Japan but also asserted as territory by Beijing.

“China coast guard vessel 1307 formation performed surveillance within the territorial waters of the Diaoyu islands. This was a lawful patrol operation conducted by the Chinese maritime authorities to uphold its rights and interests,” officials declared.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the disputed territory but the latest activity occur during an escalating political dispute after the Japan's leader, Sanae Takaichi, addressed lawmakers that if China attack democratically ruled Taiwan it could trigger a military response from Japan.

That sparked an angry response from China, which has indicated it demands a retraction from Takaichi.

Island's Stance

Beijing asserts the island as its sovereign land and plans to incorporate it under what it terms “unification”. It has left open the use of force. The island's administration and citizens overwhelmingly reject the idea of Beijing's control – preferring to maintain the status quo without explicitly declaring themselves independent, but pledging to protect their sovereignty if required.

An attack or invasion by China would risk escalating into a international confrontation, possibly drawing in the US and other partner nations including Tokyo, which has land just 110km (68 miles) from Taiwan.

Military Activity

On the island, the defence ministry reported this weekend that it had detected 30 Chinese military aircraft, seven navy ships and one government vessel, which was probably the maritime patrol, active near the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs operating near the island and the Japan's territory off its northeastern shoreline, appearing to go particularly close to Yonaguni. PLA movements there are occasional, but uncommon, and Beijing's defense operations in the island's ADIZ generally has been low in the past month.

Earlier this weekend, the defense officials said China had been conducting another “joint combat patrol” to “harass the airspace and sea around us”. It noted Taiwan had dispatched military assets to monitor the situation. The island 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

Japan has been experiencing increased strain from Beijing since Takaichi made her comments, with Beijing's diplomatic representative in Osaka triggering an official complaint from Japan by stating that “those who interfere will face consequences”.

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 doomed to fail.

Travel and Education Advisory

Late last week, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it did not elaborate.

Three Chinese airlines announced this weekend that flights to Tokyo could be cancelled without penalty.

In another escalation, China’s government on the weekend urged its citizens to “carefully reconsider” studying 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 detrimental effect on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to official data. They featured over 123,000 learners from China – by far the largest demographic.

Media Response

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

“A conflict between Japan and China would not be a small-scale encounter; it would probably involve other nations, including the United States, and could rapidly escalate to a major confrontation with unimaginable consequences.”

Policy Standpoints

The administration in Taipei says the island's residents alone determine their destiny. Japanese leaders have previously avoided publicly mentioning Taiwan when addressing potential conflicts, maintaining a “deliberate vagueness” also preferred by Japan's primary defense partner, the US.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the People’s Republic of China is “unavoidable”, and portrays dissent as provocative. As it moves towards being capable of military annexation, Beijing has also been increasing its political operations and its statements towards Taiwan.