(North) Korean Central News Agency (3/5/13):
"Now that the U.S. imperialists seek to attack the DPRK even with nuclear weapons, it will counter them with diversified precision nuclear strike means of Korean style.
Those means are bound to be launched once their buttons are pressed, and the enemies' strongholds be turned into a sea in flames.
This land is neither the Balkans nor Iraq and Libya.
The army and people of the DPRK have everything including lighter and smaller nukes unlike what they had in the past."
Pyongyang claims the U.S./South Korean "Foal Eagle" exercise is a drill to prepare for invasion of the North. See more about Foal Eagle here.