South Korea appears to be working hard behind-the-scenes to keep the inter-Korean peace drive on track... despite last month's disappointing summit in Hanoi.<br />Seoul's top security adviser Chung Eui-yong reportedly traveled to China last weekend for a meeting with the country's top diplomat Yang Jiechi.<br />Sources say the two discussed the North Korea-U.S. summit and possible follow-up measures. <br />Chung was reportedly due to hold a phone conversation with his U.S. counterpart John Bolton on Monday evening, Korea time. <br />Earlier 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.<br />The Blue House has yet to confirm whether the call happened. <br />
