S Korea, Japan, US seek deal to track N Korean missilesAP, TOKYOJapan, the US and South Korea are negotiating an agreement on sharing real-time data on North Korean missile launches, Japanese Chief Cabinet Secretary Hirokazu Matsuno said yesterday. “The security environment surrounding Japan and South Korea is becoming more severe and more complex, and coordination between the two countries, as well as trilaterally with the United States, has become increasingly important,” he said. A missile is launched at an undisclosed location in an image taken from videoand released by North Korea’s Korean Central News Agency. Leaders of the three countries in November last year agreed to speed up information sharing on North Korean missile launches. Japanese and South Korean defense ministers would hold bilateral talks during the conference, the newspaper said.