The United States has warned North Korea of consequences if it goes ahead with its threat of a weapons test in the New Year.

At the UN Security Council, US ambassador Kelly Craft voiced concern that North Korea is indicating it would test intercontinental ballistic missiles which are designed to attack the continental United States with nuclear weapons. She said missile and nuclear testing will not bring Pyongyang greater security.

Hinting at further sanctions, Craft said if events prove otherwise Security Council must be prepared to act accordingly.

Earlier, North Korea vowed an ominous Christmas gift if the US does not come up with concessions by the end of the year.

Craft ruled out meeting North Korea’s demands for an offer in the year’s final weeks, saying the United States and the Security Council have a goal, not a deadline. But she said the United States wanted to work toward a deal and they are prepared to be flexible in how they approach this matter.