North Korea on Tuesday said that it has carried out a nuclear counter-attack simulation "involving super-large multiple rocket artillerymen." State-controlled news agency KCNA reported that North Korean leader Kim Jong Un oversaw the Monday launches, the first demonstration of Pyongyang's new nuclear-weapons management and control system called "Haekbangashoe," or "nuclear trigger." Kim had expressed his satisfaction with the test, KCNA reported. The missiles fired hit their target in the sea wi