BEIJING: China and Russia conducted a joint air patrol on Tuesday (Jun 6) over the Sea of Japan and East China Sea for a sixth time since 2019, prompting neighbouring South Korea to scramble fighter jets.
China's defence ministry said the patrol was part of the two militaries' annual cooperation plan. South Korea scrambled fighter jets, according to its military, after four Russian and four Chinese military aircraft entered its air defence zone in the south and east of the Korean peninsula.
In China's last joint aerial patrol with Russia in November, South Korea also scrambled fighter jets after Chinese H-6K bombers and Russian TU-95 bombers and SU-35 fighter jets entered its Air Defence Identification Zone (KADIZ).
Japan similarly scrambled jets when Chinese bombers and two Russian drones flew into the Sea of Japan.
An air defence zone is an area where countries demand that foreign aircraft take special steps to identify themselves. Unlike a country's airspace - the air above its territory and territorial waters - there are no international rules governing air defence zones.