Japan, like South Korea, identified two Chinese H-6 bombers and two Russian TU-95 bombers flying over the strait between the countries.

In addition, there was a Russian A-50 observation plane at which South Korea had fired warning shots after it passed close to the island it controls, known as Dokdo in South Korea and Takeshima in Japan.

Japan regularly scrambles fighters to intercept Chinese and Russian aircraft that fly close to its territory, with 999 such intercepts in the twelve months that ended on March 31.