정의용 중국방문, 볼턴 통화,… 청와대 '확인해 줄 수 없어'

South Korea appears to be working hard behind-the-scenes to keep the inter-Korean peace drive on track.
Seoul's top security adviser Chung Eui-yong... reportedly traveled to China over the weekend for a meeting with the country's top diplomat Yang Jiechi.
Sources say the two discussed the Hanoi summit and possible follow-up measures.
Chung was reportedly due to hold a phone conversation with his American counterpart on Monday evening, Korea time.
Earlier, John Bolton told ABC News he will be speaking with Chung over the latest satellite images that show the regime could be rebuilding its missile launch site.
South Korea's top office has yet to confirm whether the call happened.