North Korean leader Kim Jong Un oversaw tests of "special mission" warhead for a tactical ballistic missile, state media KCNA reported on Friday, as Pyongyang pushes for an "offensive posture" along its border with South Korea . While supervising the tests of "major weapons" Kim said North Korea's self-defense policy includes an objective to strengthen "the deadly and destructive offensive posture to make no enemy dare to confront," according to KCNA. The tests were conducted on the anniversary