Washington: US President Donald Trump has threatened North Korean leader Kim Jong-un with "decimation", unless Kim agrees to denuclearise the Korean peninsula.

With the June 12 US-North Korea summit at stake and plenty of statements flying from both sides, Trump gave Kim two options: reach an agreement to denuclearise and remain in power or suffer the fate of Libyan leader Muammar Gaddafi, who was overthrown and murdered by rebels who were supported by a NATO bombing campaign in 2011.

Donald Trump and Kim Jong-un are scheduled to meet in Singapore on June 12. Credit:AP

"If you look at that model with Gaddafi, that was a total decimation. We went in there to beat him. Now that model would take place if we don't make a deal, most likely," Trump told reporters prior to his meeting with NATO Secretary General Jens Stoltenberg at the White House on Thursday, US time.

"But if we make a deal, I think Kim Jong-un is going to be very, very happy," the President added.