Han said North Korea changed its military strategy two years ago, when the reports of "decapitation strike" training began to really get attention, to stress pre-emptive actions.

'That is scarier than the explosion of hundreds of nuclear bombs above the enemies' heads,' official says

Pyongyang also said it has made strides that could bring it closer to mounting a warhead on one of its ballistic missiles and launching a long-distance nuclear strike.

North Korea has threatened to fire at lighting equipment being used by the US and South Korean militaries at a village inside the Demilitarized Zone.

A top North Korean diplomat on Thursday warned the United States had "crossed the red line" and effectively declared war by putting leader Kim Jong Un on its list of sanctioned individuals. (July 28) AP

NORTH Korea’s state radio has recently broadcast strings of indecipherable numbers, Seoul officials said on Tuesday, in a possible resumption of a Cold War-era method of sending coded messages to spies operating in South Korea.

A Japanese sushi chef who served Kim Jong-Il claims North Korea's current leader has no intention of waging war with the United States.