SEOUL--North Korea Friday attacked the new US nuclear policy, saying it showed Washington's continued hostility, and vowed to strengthen its own atomic arsenal.
"As long as the US nuclear threat persists, the DPRK (North Korea) will increase and update various type of nuclear weapons as its deterrent in such a manner as it deems necessary in the days ahead," a foreign ministry spokesman told the official news agency.
In its "Nuclear Posture Review" announced Tuesday, the Obama administration renounced the use of nuclear weapons against non-nuclear states that are in compliance with the nuclear Non-Proliferation Treaty.
But it left open all options against countries such as North Korea or Iran which it said defy nonproliferation obligations. The North quit the treaty in 2003 and has since staged two atomic weapons tests.
"This proves that the present US policy towards the DPRK is nothing different from the hostile policy pursued by the Bush administration," the ministry said.
"What is most urgent is for the US to roll back its hostile policy towards the DPRK in practice."
The North also complained that the new US policy "chilled the hard-won atmosphere for the resumption" of stalled six-nation nuclear disarmament talks.
The talks, grouping the two Koreas, China, Japan, Russia and the United States, were last held in December 2008. The North announced in April 2009 it was quitting the forum and it staged its second nuclear test a month later.
As conditions for returning, it wants a US commitment to hold talks about a formal peace treaty and the lifting of UN sanctions.
The North says it developed its atomic arsenal to deter a US nuclear threat and cannot give it up until the threat is lifted.
The foreign ministry said the North's goal is denuclearization of the Korean peninsula.
"If the peninsula and the rest of the world are to be denuclearized, the US should stop such hostile acts as trampling down upon other countries' sovereignty and right to existence, pursuant to its policy of strength based on nuclear supremacy."