South Korea's presidential office of Cheong Wa Dae convened a security meeting on Sunday,... a day after President Moon Jae-in met with North Korean leader Kim Jong-un for a second inter-Korean summit. 
   The National Security Council standing meeting hosted by President Moon's top security advisor   Chung Eui-yong,... discussed follow-up measures to the latest summit, including the high-level talks between the two Koreas. 
They also discussed ways to contribute to the successful opening of the North Korea-U.S. summit.