A radar lock-on, used to guide missiles, is considered a serious escalation compared with routine surveillance, an expert said.

Japan has protested to China after a Chinese military jet locked its radar on Japanese fighter jets near Okinawa

In a world beset by conflict in the Middle East and an enduring war in Ukraine, tensions are again heating up in East Asia. Will cooler heads prevail?

The Japanese government is taking uncomfortable steps to prepare its citizens for a possible future war that its military would not be able to avoid.

Japan's Defense Minister Koizumi Shinjiro has again expressed concern over Chinese military aircraft directing radar at Japanese Air Self-Defense Force fighter jets over international waters off Okinawa's main island in southern Japan on Saturday.

No end in sight to spat between Japan and China over Taiwan, as neither Tokyo nor Beijing shows signs of backing down.

The 15-year effort by Japan is a model for countries now scrambling to reduce their dependence on Beijing’s critical metals.

China and Japan ties, already frayed by comments made by Prime Minister Sanae Takaichi on Taiwan, came under further strain at the weekend after a Chinese fighter aircraft trained fire-control radar on Japanese military jets for the first time.

As China-Japan diplomatic row ripples into entertainment, over 30 Japanese performances have been abruptly cancelled, leaving millions of fans of Japanese culture in China worried about a potential broader cultural ban.

A Chinese Foreign Ministry spokesperson has repeated the country's claim over the radar targeting issue with Japan.

A Chinese carrier strike group sailing close to Japan kept up intense air operations on Sunday as it sailed into the Pacific Ocean east of the Okinawa Islands, Japan's Self-Defense Forces said Monday.