AFP: N. Korea approves nuclear strike on United States

SEOUL — North Korea dramatically escalated its warlike rhetoric on Thursday, warning that it had authorised plans for nuclear strikes on targets in the United States.

"The moment of explosion is approaching fast," the North Korean military said, warning that war could break out "today or tomorrow".

Pyongyang's latest pronouncement came as Washington scrambled to reinforce its Pacific missile defences, preparing to send ground-based interceptors to Guam and dispatching two Aegis class destroyers to the region.