South Korea has warned it will sternly respond to any infringement upon its sovereignty by Japan over South Korea's Dokdo Island.<br />This comes after Japan's defense and foreign ministries on Tuesday summoned a South Korean military attache and an embassy official stationed in Japan.<br />Tokyo lodged a complaint as a South Korean F-15K fighter jet conducted a patrol flight over the island earlier in the day to mark South Korea's 71st Armed Forces Day.<br />Seoul's defense ministry said Dokdo is historically, geographically and by international law South Korean territory and any claim by Japan doesn't deserve any consideration.<br />
