North Korean dictator Kim Jong-Un wants to meet his arch critic President Donald Trump and has agreed to suspend nuclear missile tests.
Trump has reportedly already agreed to meet Kim by May.
The possible get-together is apparently being brokered by South Korea and a delegation led by the nation's national security adviser Chung Eui-Yong delivered the letter offering a meeting to Trump at the White House. Chung also announced to a press conference at the White House today that Kim was committed to demilitarisation.
After a year in which North Korea fired intercontinental ballistic missiles capable of reaching all of the United States and tested what is widely thought to have been a hydrogen bomb, any break in tensions between the two countries would likely be welcomed around the world.
There has never been a face-to-face meeting, or even a phone call, between the sitting leaders of the two countries.
Trump has repeatedly traded insults with the North Korean leader.
Kim has described the US president a "rogue" and a "dotard" and Trump called Kim "little rocket man" after North Korea's missile tests.
Trump has previously indicated he was open to dialogue with North Korea, but the US administration has said North Korea must first take tangible steps towards denuclearisation.
But Trump has also said the US would rain "fire and fury" on North Korea.
US Secretary of State Rex Tillerson said yesterday in Ethiopia that the US has seen "potentially positive signals'' from North Korea, but the adversaries are still a long way from holding negotiations.