North Korea is giving approval on a plan to attack the U.S.
The state news agency says the orders include the possibility of using "cutting edge" nuclear weapons.
It comes after the nation warned there could be a pre-emptive strike months ago.
Tensions have been growing on both sides in a war of words. Defense Secretary Chuck Hagel said today verbal threats would be taken very seriously.
The U.S. has approved a move to send a high-tech ballistic missile defense system to Guam.
The Pentagon calls it a precautionary measure to strengthen regional defenses.
Military officials called for an end to the threats and to choose a path to peace.