China Sends Maritime Patrol Vessels to Diaoyu Islands During Tensions with Tokyo

Beijing has sent its maritime law enforcement through the maritime area of the Diaoyu islands and military drones near outlying Japanese territory as Beijing ramps up tensions over the Japanese prime minister’s remarks regarding the island of Taiwan.

Rights Enforcement Activities

On Sunday, the China's maritime patrol stated that its ships conducted a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Japan but also claimed by China.

“Chinese maritime patrol unit 1307 conducted patrols within the territorial waters of the Senkaku islands. This was a legitimate rights enforcement activity conducted by the China coast guard to protect its sovereign claims,” officials declared.

Bilateral Tensions

Beijing and Tokyo have consistently clashed around the disputed territory but the recent developments occur during an escalating political dispute after the Japan's leader, the Japanese official, told parliament that if China attack the self-governing island of Taiwan it could trigger a military response from Tokyo.

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

Island's Stance

Beijing asserts Taiwan as its sovereign land and intends to annex it under what it terms “reunification”. It has not ruled out the military option. Taiwan’s government and citizens overwhelmingly reject the idea of Beijing's control – choosing to preserve 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 regional or global conflict, potentially involving the US and other partner nations including Japan, which has territory just 68 miles from the island.

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 likely the coast guard, 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, seeming to travel unusually near 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 low in recent weeks.

Earlier this weekend, the ministry said Beijing had been carrying out another “joint combat patrol” to “harass the airspace and sea around us”. It noted Taiwan had sent its own aircraft and ships to track the developments. Taiwan reports such Chinese patrols a couple of times a month as part of what Taipei says is an continuous strategic pressure.

Diplomatic Pressure

Japan has been facing mounting pressure from Beijing since Takaichi made her comments, with Beijing's diplomatic representative in the Japanese city triggering an official complaint from Japan by stating that “those who interfere will face consequences”.

China then summoned the Japanese ambassador for the first occasion since 2023, and China’s defence ministry stated that any Japanese intervention would be certain to collapse.

Warning for Citizens

Late last week, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “appropriate measures”, though it provided no details.

Multiple carriers from China said on Saturday that tickets to Japan could be refunded or changed for free.

In another escalation, Beijing's administration on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an unstable security environment.

Although not an outright prohibition, a significant decrease in the population of learners from China could have a detrimental effect on academic institutions in Japan. A record 336,708 foreign nationals were studying in Japan last year, according to official data. They included more than 123,000 Chinese students – by far the largest demographic.

Official Commentary

Earlier this weekend, a Chinese state media editorial charged the Japanese official with performing a political stunt 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 quickly spiral into a major confrontation with severe repercussions.”

Policy Standpoints

The administration in Taipei 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 “strategic ambiguity” also favoured by Tokyo’s main security ally, the United States.

Nevertheless, Beijing's governing party says the unification of Taiwan with the People’s Republic of China is “unavoidable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been escalating its non-military activity and its rhetoric towards Taiwan.