A letter was delivered from US President Donald Trump to North Korean leader Kim Jong Un over the weekend, a source familiar with the ongoing denuclearization talks between Washington and Pyongyang told CNN.
The letter comes as the two sides negotiate details of a second meeting between the two leaders. It was flown to Pyongyang and delivered by hand, the source said.
According to the source, North Korea's former spy chief Kim Yong Chol -- one of Pyongyang's top negotiators -- could visit Washington as soon as this week to finalize details of the upcoming summit.