Bedminster, New Jersey: US President Donald Trump on Tuesday issued a stern warning to North Korea, saying that if its threats to the United States continue, the outcast nation will be "met with the fire and the fury like the world has never seen".

Trump's comments came as North Korea spurned a new round of sanctions approved by the United Nations Security Council and pledged to continue to press forward with development of nuclear weapons that could reach the US mainland.

Appearing at an event at his golf club in Bedminster, New Jersey, where he is on a 17-day "working vacation", Trump said that "North Korea best not make any more threats of the United States".

"They will be met with the fire and fury and frankly power, the likes of which this world has never seen before," Trump said.