South and North Korean ambassadors to Bulgaria meet each other at a luncheon hosted by Bulgarian President Rumen Radev (C) in Sofia for envoys from Asian countries on March 12, 2018. Inter-Korean ties have warmed recently with an agreement for a summit and potential development in denuclearization talks. At left is South Korean Ambassador Shin Boo-nam, and at right is North Korean Ambassador Cha Kon-il. (Yonhap) (END)