TOPSHOT - A man walks past a giant banner showing a picture of the summit handshake between South Korean President Moon Jae-in and North Korean leader Kim Jong Un, at Seoul City Hall on September 13, 2018. - South Korean President Moon Jae-in will fly to North Korea's capital on September 18, for a third summit with the North's leader Kim Jong Un as US efforts to dismantle Pyongyang's nuclear arsenal have stalled. (Photo by Jung Yeon-je / AFP)