A letter from U.S. President Donald Trump has been sent to Kim Jong Un, the leader of the Democratic People's Republic of Korea (DPRK), over the weekend, CNN reported on Tuesday.
The letter "was flown to Pyongyang and delivered by hand," reported CNN citing an anonymous source whom the cable network said was familiar with the ongoing negotiations between the two sides.
It has also been reported that Kim Yong Chol, vice chairman of the ruling Workers' Party of Korea (WPK) Central Committee, may meet U.S. Secretary of State Mike Pompeo later this week in Washington.
Washington and Pyongyang have been working on details of the expected second Trump-Kim meeting. CNN reported that the U.S. had sent teams to Bangkok, Hanoi, and Hawaii searching for a possible location for the second summit.
During his fourth visit to China last week, Kim said Pyongyang is making efforts to realize the second summit with President Trump to achieve results on denuclearization.
The relationship between the DPRK and U.S. improved last year. And the two leaders held their first summit in Singapore in June.
But the gap over the process of denuclearization remain – the DPRK says that the U.S. should ease sanctions as a means of rewarding initial steps towards denuclearization while Washington insists the sanctions remain in place.