North Korean leader Kim Jong-un inspected Navy units in the western sea. According to South Korean news agency (Yonhap), Jong-un accompanied several military commanders on a tour of a defense unit on Cho Islet, some 70 kilometers west of the North\'s capital Pyongyang, and then visited Navy Unit 123. The leader\'s military inspection came days after South Korean Defense Minister Kim Kwan-jin made a rare trip to Yeonpyeong Island vowing to launch retaliation against North Korea if provoked again amid an escalation of militaristic rhetoric by Pyongyang. The two Koreas remain technically at war with each other since their 1950-53 conflict ended with a truce, not a peace treaty.