In this image made from video, South Korean President Moon Jae-in, right, is welcomed by the Democratic People's Republic of Korea leader Kim Jong Un for a photo on the podium upon arrival in Pyongyang, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in, second from right, and his wife Kim Jung-sook, left, are welcomed by the Democratic People's Republic of Korea leader Kim Jong Un and his wife Ri Sol Ju upon their arrival in Pyongyang, DPRK, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in, second from right, and his wife Kim Jung-sook, left, are welcomed by the Democratic People's Republic of Korea leader Kim Jong Un and his wife Ri Sol Ju upon their arrival in Pyongyang, DPRK, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in arrives in Pyongyang, DPRK, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in, right, is welcomed by the Democratic People's Republic of Korea leader Kim Jong Un for a photo on the podium upon arrival in Pyongyang, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in, left, poses with the Democratic People's Republic of Korea leader Kim Jong Un for a photo on the podium upon arrival in Pyongyang, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
In this image made from video, South Korean President Moon Jae-in arrives in Pyongyang, DPRK, Sept. 18, 2018. Moon landed in Pyongyang for his third summit this year with Kim. (Photo/Agencies)
People watch the televised broadcast in Seoul, South Korea, Sept. 18, 2018, of South Korea's President Moon Jae-in as he is greeted by the Democratic People's Republic of Korea leader Kim Jong Un after arriving in Pyongyang for the inter-Korean summit. (Photo: China News Service/Zeng Ding)
People watch the televised broadcast in Seoul, South Korea, Sept. 18, 2018, of South Korea's President Moon Jae-in as he is greeted by the Democratic People's Republic of Korea leader Kim Jong Un after arriving in Pyongyang for the inter-Korean summit. (Photo: China News Service/Zeng Ding)