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Beijing has sent its coast guard into the waters of the Senkaku islands and military drones near remote Japanese territory as Beijing escalates strains over the Japan's leader's remarks regarding the island of Taiwan.

Patrol Operations

This past Sunday, the China's maritime patrol announced that its ships carried out a “lawful patrol operation” through the waters of the Diaoyu islands, which are under the control of Tokyo but also asserted as territory by China.

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

Diplomatic Spat

China and Japan have consistently clashed around the disputed territory but the latest activity occur during an escalating political dispute after the Japanese prime minister, Sanae Takaichi, addressed lawmakers that if China attack the self-governing island of Taiwan it might provoke a armed reaction from Tokyo.

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

Taiwan's Position

Beijing asserts Taiwan as its sovereign land and intends to annex it under what it describes as “reunification”. It has not ruled out the use of force. The island's administration and citizens overwhelmingly reject the idea of Beijing's control – preferring to maintain the current situation 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 United States and other partner nations including Tokyo, which has land just 68 miles from Taiwan.

Military Activity

On the island, the defence ministry said on Sunday morning that it had detected three dozen PLA planes, multiple naval vessels and one “official” ship, which was probably the maritime patrol, active near the island 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, appearing to go unusually near to the nearby Japanese island. Chinese military transits there are not rare, but infrequent, and Chinese military activity in Taiwan’s air defence identification zone generally has been low in recent weeks.

Late on Saturday, the defense officials said Beijing had been carrying out another “combined military exercise” to “test our defensive capabilities”. It added Taiwan had sent its own aircraft and ships to monitor the situation. Taiwan documents these operations a few times monthly as part of what Taipei says is an ongoing military pressure campaign.

Diplomatic Pressure

Japan has been experiencing increased strain from Beijing since Takaichi made her remarks, with China’s consul general in Osaka prompting a formal protest from Tokyo by commenting that “those who interfere will face consequences”.

China then summoned the Japanese ambassador for the first occasion since 2023, and Beijing's military authorities stated that any Japanese intervention would be doomed to fail.

Warning for Citizens

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

Three Chinese airlines said on Saturday that flights to Tokyo 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 number of Chinese students could have a negative impact on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to education statistics. They featured over 123,000 learners from China – by far the single biggest group.

Media Response

Late on Saturday, a Chinese state media editorial 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 small-scale encounter; it would probably involve other powers, including the United States, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Policy Standpoints

The government of Taiwan says only its people can decide its future. Japanese leaders have previously avoided discussing the island openly when addressing potential conflicts, maintaining a “deliberate vagueness” also preferred by Japan's primary defense partner, the United States.

Nevertheless, China’s ruling Communist party says the incorporation of the island with the mainland China is “unavoidable”, and casts any opposition to it as escalatory. As it advances toward potential armed takeover, Beijing has also been escalating its non-military activity and its statements towards Taiwan.