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

Rights Enforcement Activities

On Sunday, the China's maritime patrol announced that its vessels conducted a “rights enforcement patrol” through the waters of the Diaoyu islands, which are under the control of Japan but also claimed by Beijing.

“China coast guard vessel 1307 formation performed surveillance within the maritime jurisdiction 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.

Diplomatic Spat

China and Japan have repeatedly faced off around the islands but the latest activity come amid an intensifying diplomatic spat after the Japanese prime minister, Sanae Takaichi, told parliament that if Beijing assaults the self-governing island of Taiwan it might provoke a armed reaction from Tokyo.

That provoked a furious reaction from China, which has signalled it expects a withdrawal from Takaichi.

Taiwan's Position

Beijing asserts Taiwan as its sovereign land and plans to incorporate it under what it terms “unification”. 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 pledging to protect their sovereignty if required.

An military assault by China would threaten to spiral into a international confrontation, possibly drawing in the US and other allies including Tokyo, which has land just 68 miles from Taiwan.

Military Activity

On the island, the military authorities reported this weekend that it had observed 30 Chinese military aircraft, multiple naval vessels and one government vessel, which was likely the coast guard, operating around the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs operating near Taiwan and the Japanese islands off its northeastern shoreline, seeming to travel particularly close to the nearby Japanese island. 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 “combined military exercise” to “harass the airspace and sea around us”. It noted the island had dispatched military assets to track the developments. The island reports such Chinese patrols a couple of times a month as part of what the Taiwanese government says is an ongoing military pressure campaign.

Political Strain

Japan has been facing mounting pressure from China since the Japanese official made her comments, with Beijing's diplomatic representative in the Japanese city prompting a formal protest from Japan by stating that “the dirty head that sticks itself out must be cut off”.

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

Travel and Education Advisory

On Friday, Beijing cautioned its citizens against travelling to Japan, leading Japan to request China to take “suitable actions”, though it provided no details.

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

Adding to the tensions, China’s government on the weekend advised students to rethink education plans in Japan, citing what it characterized as an volatile safety situation.

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 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 political stunt that was “not just dangerously provocative but fundamentally perverse”.

“A conflict between Japan and China would not be a limited skirmish; it would likely draw in other nations, including the US, and could rapidly escalate to a large-scale conflict with unimaginable consequences.”

Strategic Positions

The administration in Taipei says the island's residents alone determine their destiny. Officials in Tokyo have traditionally refrained from discussing the island openly when discussing such scenarios, maintaining a “strategic ambiguity” also favoured by Tokyo’s main security ally, the United States.

However, China’s ruling Communist 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 advances toward potential armed takeover, Beijing has also been increasing its political operations and its rhetoric towards the island.