BBC NEWS | Asia-Pacific | North Korea condemns UN sanctions: "North Korea has denounced the UN Security Council resolution which imposes weapons and financial sanctions over its claimed nuclear test.
North Korea's UN ambassador said the Council had behaved like 'gangsters' and any further US pressure would be seen as 'a declaration of war'.
The resolution was passed unanimously but China has expressed reservations.
US Secretary of State Condoleezza Rice is set to visit the region next week to encourage implementation of sanctions.
The incoming UN Secretary General, South Korea's Ban Ki-moon, has told the BBC that he is prepared to travel to Pyongyang if necessary to help to defuse the crisis."