North Korean leader Kim Jong Un oversaw major weapons tests and called for the military’s “deadly and destructive offensive posture” to be strengthened, state media reported on Friday, as South Korea said it would sharply expand its drone warfare capabilities. The moves come at a time of high tension on the Korean Peninsula, with Kim pushing to build both nuclear and conventional military strength while refusing to return to talks with South Korea and the United States.advertisementRead Full StoryThe tests observed by Kim on Thursday were aimed at assessing the power of a “special mission” warhead for a tactical ballistic…