The chief nuclear negotiators of South Korea, the U.S. and Japan plan to gather next week in Seoul to discuss ways to jointly cope with the escalating tension amid North Korea’s growing military threats, Seoul’s Foreign Ministry said Friday. Hwang Joon-kook, special representative for Korean peninsular peace and security affairs and chief delegate to the six-party talks aimed at denuclearizing the North, will host the meeting on May 26-27. It will be attended by Sung Kim, special representative