The Japanese Prime Minister Vows a 'Firm' Response Following Radar Lock-On Altercation With China's Fighter Jets.

Japan's prime minister, Sanae Takaichi, has pledged to act "with calm determination" after reports that Chinese military jets targeted with fire-control radar Japan's fighter jets southeast of the main island during the past weekend.

An Concerning Incident Reported

As stated by Japan's Ministry of Defense, Chinese J-15 fighter aircraft operating from the carrier Liaoning engaged their fire-control radar on Japan's F-15s on two occasions last Saturday. The first incident took place at 4:32 p.m. and was repeated approximately later. The ministry stated that visual confirmation was not possible due to the range involved, and confirmed that no damage or injuries resulted.

"This was the first time the Japanese Ministry of Defense has made public such an incident," one news agency stated. Military aircraft routinely use radar to target identification.

Official Protest and Counter-Claims

In response to Tokyo's claims, China's military released a declaration rejecting the report as "totally contrary to reality." The statement urged Tokyo to "immediately stop making false accusations." Instead, China asserted that Japanese Self-Defense Forces planes had "seriously endangered flight safety" by consistently flying near its training zones. Beijing did not mention any radar targeting.

An official for China's Ministry of Foreign Affairs later called on Tokyo to "immediately stop its provocative actions of interfering with our normal drills and exercises."

Rising Strains and Regional Background

Relations linking Beijing and Tokyo have soured markedly in recent weeks. The downturn followed PM Takaichi remarked that an attack on Taiwan might lead to the dispatch of Japan's Self-Defense Forces if the situation posed an existential threat to Japan.

Takaichi argued that Japan had the right to invoke its right to collective self-defence, which involves assisting an ally. The Prime Minister stated that Japan had to "prepare for the most severe possibilities" regarding the Taiwan Strait.

The Japanese defence minister, Shinjiro Koizumi, described the radar incident as "dangerous and extremely regrettable." In a diplomatic move, China's ambassador to Japan, Wu Jianghao, was called in on Sunday.

Japan's vice minister for foreign affairs, Funakoshi Takehiro, lodged a "formal complaint" and demanded the Chinese government to "ensure that such acts are not repeated."

Enduring Points of Contention

Japan and China have a long-running territorial dispute over the Senkaku Islands, called the Diaoyu by Beijing. The small, unoccupied islands lie between Okinawa and Taiwan.

Additionally, broader geopolitical tensions persist. Tokyo has been deepening cooperation with American and other partners in the Asia-Pacific region, a region where a number of countries are engaged in similar territorial and maritime disputes with Beijing.

China, for its part, maintains vast territorial claims in adjacent seas, a posture that has drawn international concern.