SEOUL, South Korea (AP) -- North Korea's young leader is urging front-line troops to be on "maximum alert" for a potential war.
North Korean state media reports Kim Jong Un made the remarks during a visit with artillery troops stationed near disputed waters that have seen several bloody clashes in past years.
Meanwhile, a state-run newspaper says Pyongyang has carried out a threat to cancel the 1953 armistice that ended the Korean War.
The moves are part of a stream of angry rhetoric that has followed last week's U.N. Security Council vote imposing new sanctions on North Korean over last month's nuclear test. Pyongyang has also vowed to strike the United States with nuclear weapons.
It is unclear whether North Korea can act on its threats. A U.N. spokesman says the communist regime cannot unilaterally dissolve the armistice. Pyongyang is also years away from acquiring the smaller, lighter nuclear warheads needed to pose a credible threat to the United States.
Still, National Security adviser Tom Donilon say North Korea's claims may be "hyperbolic," but the United States will protect its allies.