North Korean leader Kim Jong Un has guided an artillery firing drill involving units near the border with South Korea, state-run media said Friday, in an apparent response to an ongoing joint military exercise conducted by Seoul and Washington.The units "put the enemy's capital in their striking range and fulfilled important military missions for war deterrence" in Thursday's drill, the official Korean Central News Agency said, referring to Seoul.Kim "expressed his great satisfaction" as all the artillery units involved in the drill were fully ready for constant mobilization for battle, KCN…READ FULL ARTICLE