North Korea has threatened unspecified attacks on the US in an escalation of a war of words following the Sony Pictures cyber-attacks.
In a fiery statement, the North warned of strikes against the White House, Pentaagon and “the whole US mainland”.
North Korea denies US claims it is behind cyber-attacks linked to a film that features the fictional killing of its leader Kim Jong-un.
North Korea has a long history of issuing threats against the US.
The latest statement comes days after the US formally accused the North of orchestrating a massive cyber attack on Sony Pictures.
“The army and people of the DPRK [North Korea] are fully ready to stand in confrontation with the US in all war spaces including cyber warfare space,” a long statement carried by the official Korean Central News Agency said.
“Our toughest counteraction will be boldly taken against the White House, the Pentagon and the whole US mainland, the cesspool of terrorism, by far surpassing the ‘symmetric counteraction’ declared by Obama.”
It accused President Obama of “recklessly making the rumour” that North Korea was behind the Sony attack.
It also said it “estimates highly the righteous action” taken by the hackers of Sony, although it is “not aware of where they are”.