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China has sent its maritime law enforcement into the waters of the Senkaku islands and military drones past remote Japanese territory as China escalates strains over the Japan's leader's remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard announced that its vessels conducted a “rights enforcement patrol” through the waters of the Senkaku, which are administered by Japan but also claimed 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 undertaken by the China coast guard to protect its sovereign claims,” the statement said.

Diplomatic Spat

Beijing and Tokyo have repeatedly faced off around the islands but the latest activity occur during an intensifying diplomatic spat after the Japanese prime minister, 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 Beijing, which has indicated it demands a withdrawal from the Japanese official.

Taiwan's Position

Beijing asserts Taiwan as its own territory and plans to incorporate it under what it describes as “reunification”. It has not ruled out the military option. The island's administration 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 risk escalating into a regional or global conflict, possibly drawing in the US and other partner nations including Tokyo, which has land just 110km (68 miles) from Taiwan.

Military Activity

In Taiwan, the military authorities reported this weekend that it had observed 30 Chinese military aircraft, seven navy ships and one “official” ship, which was probably the maritime patrol, operating around the island over the past 24 hours.

Maps provided by the ministry showed up to three drones operating near Taiwan and the Japanese islands off its northeastern shoreline, appearing to go unusually near to Yonaguni. Chinese military transits there are occasional, but uncommon, and Beijing's defense operations in Taiwan’s air defence identification zone generally has been low in recent weeks.

Earlier this weekend, the ministry said Beijing had been conducting another “combined military exercise” 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 ongoing military pressure campaign.

Diplomatic Pressure

Tokyo has been experiencing increased strain from China since the Japanese official made her comments, with Beijing's diplomatic representative in the Japanese city 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 China’s defence ministry stated that any Tokyo's involvement would be doomed to fail.

Travel and Education Advisory

On Friday, 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 tickets to Japan could be cancelled without penalty.

In another escalation, China’s government 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 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 single biggest group.

Official Commentary

Late on Saturday, a official press commentary charged the Japanese official with performing a political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A clash between Tokyo and Beijing would not be a limited skirmish; it would probably involve other nations, including the United States, and could quickly spiral into a major confrontation with unimaginable consequences.”

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Japanese leaders have traditionally refrained from publicly mentioning Taiwan when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Japan's primary defense partner, the US.

Nevertheless, Beijing's governing party says the incorporation of the island with the People’s Republic of 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 Taiwan.