Fact I: The two parties really want far more than the amount that the opposite side can offer, or the original plan that the diplomats of two countries arranged before the Summit.
For the U.S., the DPRK must take the first step by denuclearizing all its nuclear weapons, facilities, raw materials, and the design-production team; and then Washington may consider the establishment of U.S.-DPRK diplomatic ties and bringing a peace agreement on the Korean Peninsula.
For the DPRK, unfortunately, they think exactly in the same way. Both sides insist that the other one must take the risk and make concessions first. The deep reason is the lack of mutual trust.
Fact II: Mutual trust is the rigid demand for further negotiations between the DPRK and the U.S. However, neither side can make up the gap.
Therefore, a responsible third party is in urgent need, which may play the role as mediator and guarantor. The third party can be trusted by the DPRK and the U.S., and works to ensure promises from both sides.
This idea is indeed not new. International observers and experts have made various proposals during the past years. However, it seemed that neither the U.S. nor the DPRK has fully understood the value of the intermediary. Apparently, they were both eager to enjoy direct face-to-face dialogue.
Now, the lessons from Hanoi may remind the two leaders: the boundary of their power, the lack and rigid demand of mutual trust, as well as the role and value of a responsible third party.
Just on the same day of the Summit ending, DPRK's Vice Minister of Foreign Affairs Ri Kil Song visited China. At the invitation of the Chinese Foreign Ministry, Ri Kil Song intended to discuss bilateral relations and issues of common interest.
This is a good beginning, and the world may look forward to witnessing a further and more productive negotiation between the DPRK and the U.S. some days later with necessary assistance from a responsible third party.
The author is an associate research fellow at the Chongyang Institute for Financial Studies, Renmin University of China.