North Korea staunchly rejected a U.N. Security Council resolution sanctioning the communist nation for recent missile tests, and warned the measure was a prelude to a renewed "Korean war." The North also said, without elaborating, that it would "bolster its war deterrent for self-defense" -- a phrase often used to refer to its nuclear weapons program.
But the U.S. warned of more action against the North if it continues to abstain from international talks on its nuclear program, which it has boycotted for more than eight months.
North Korea drew international condemnation earlier this month after launching a long-range missile believed capable of reaching the U.S., violating a self-imposed moratorium.
On Saturday, the U.N. Security Council unanimously passed a resolution criticizing the launches and banning all U.N. member states from dealing with North Korea on material or technology for missiles or weapons of mass destruction.
The North's U.N. ambassador promptly rejected the resolution at the Security Council and left the chamber, a breach of typical diplomatic protocol.