Yesterday, South Korea's presidential office added another, claiming Pyongyang would invite global media next month to witness the closing of its Punggye-ri nuclear test site. Seoul's transport ministry said it was reviewing measures for the potential full-scale revival of economic cooperation.
Beijing will be glad tensions are easing, but wary if Seoul's influence on Pyongyang grows.
If sustained, the summit's momentum will boost South Korea's bid to take the lead role in Pyongyang's external relations.
Any North Korean retreat on the new pledges to Seoul would undermine Moon and rekindle last year's tensions.
The Kim-Trump summit will clarify Pyongyang's openness to substantial denuclearisation measures; Punggye-ri is at best a small first step.
