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China has deployed its coast guard into the maritime area of the Diaoyu islands and unmanned aerial vehicles past outlying Japan's territory as China escalates tensions following the Japan's leader's remarks regarding the island of Taiwan.

Patrol Operations

On Sunday, the Chinese coast guard stated that its vessels conducted a “rights enforcement patrol” through the territorial seas of the Senkaku, which are under the control of Japan but also asserted as territory by Beijing.

“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 uphold its rights and interests,” the statement said.

Diplomatic Spat

China and Japan have repeatedly faced off around the islands but the latest activity come amid an escalating political dispute after the Japan's leader, the Japanese official, addressed lawmakers that if China attack the self-governing island of Taiwan it might provoke a military response from Tokyo.

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

Island's Stance

China claims Taiwan as its own territory and plans to incorporate it under what it terms “reunification”. It has not ruled out the military option. The island's administration and people overwhelmingly reject the prospect of Chinese rule – choosing to preserve the current situation without formally announcing independence, but vowing to defend themselves if necessary.

An attack or invasion by China would threaten to spiral into a international confrontation, possibly drawing in the US and other partner nations including Tokyo, which has territory just 68 miles from the island.

Defense Operations

In Taiwan, the military authorities said on Sunday morning that it had detected 30 Chinese military aircraft, seven navy ships and one “official” ship, which was probably the coast guard, active near the island over the past 24 hours.

Maps provided by the ministry showed up to multiple UAVs flying between Taiwan and the Japanese islands off its north-east coast, appearing to go particularly close to Yonaguni. Chinese military transits there are occasional, but infrequent, and Chinese military activity in the island's ADIZ generally has been minimal 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 the island had dispatched military assets to track the developments. The island documents these operations a couple of times a month as part of what the Taiwanese government says is an ongoing military pressure campaign.

Political Strain

Tokyo has been experiencing increased strain from Beijing since the Japanese official made her remarks, with China’s consul general in the Japanese city prompting a formal protest from Japan by commenting that “the dirty head that sticks itself out must be cut off”.

China then called in Japan's diplomat for the first occasion since 2023, and Beijing's military authorities declared that any Tokyo's involvement would be certain to collapse.

Travel and Education Advisory

On Friday, 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 announced this weekend that flights to Tokyo could be refunded or changed for free.

In another escalation, Beijing's administration on Sunday advised students to rethink education plans in Japan, citing what it described 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 Japanese universities. 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

Late on Saturday, a official press commentary 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 likely draw in 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 the island's residents alone determine their destiny. Officials in Tokyo have previously avoided discussing the island openly when addressing potential conflicts, maintaining a “strategic ambiguity” also favoured by Tokyo’s main security ally, the US.

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