Donald Trump boasts his nuclear button is 'much bigger and more powerful' than Kim Jong Un's

Tom Powell, Ravit Anand

Donald Trump has taunted Kim Jong Un by saying his “nuclear button” is "much bigger & more powerful" than the North Korean leader's.

The US President tweeted in response to Mr Kim's declaration on New Year ’s Day that he has a button for nuclear weapons on his table and the entire US mainland is now within strike range.

Mr Trump said: “Will someone from his depleted and food starved regime please inform him that I too have a Nuclear Button, but it is a much bigger & more powerful one than his, and my Button works!”

The president does not actually have a nuclear button on his desk. Known as the nuclear "football", it is carried by a rotating group of military officers everywhere the president goes.

The tweet was posted hours after America’s UN ambassador, Nikki Haley, dismissed the importance of proposed talks between Pyongyang and Seoul.

North Korean leader Kim Jong Un has claimed to have the entire US mainland within range (AP)

She said the US would not take any talks seriously if North Korea did not abandon its nuclear programme.

Following the president’s tweet, Democratic congressman Jim Himes of Connecticut told CNN: “It really doesn’t matter what the president of the United States says anymore because it’s so bizarre, strange, not true, infantile.”

Eliot Cohen, who was counsellor to Secretary of State Condoleezza Rice under President George W Bush, said Mr Trump's tweet was "spoken like a petulant 10-year-old".