North Korea's leader Kim Jong Un (2nd L), South Korea's President Moon Jae-in (C) and US President Donald Trump (3rd L) walk following a meeting on the south side of the Military Demarcation Line that divides North and South Korea, in the Joint Security Area (JSA) of Panmunjom in the Demilitarized zone (DMZ) on June 30, 2019. (Photo by Brendan Smialowski / AFP)