SEOUL: South Korea said it had sent up fighter jets as a precaution after more than 10 Chinese and Russian military aircraft entered its air defence zone on Saturday (Jun 27). The Joint Chiefs of Staff in Seoul said the Chinese and Russian aircraft had entered and then left the Korea Air Defence Identification Zone (KADIZ) over the East Sea and the South Sea. "South Korea's military detected the Chinese and Russian aircraft before they entered the zone and deployed Air Force fighter jets to