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South Korean President Moon Jae-in (bottom) delivers a speech as characters and letters reading "Peace" are set on the top of stairs during a ceremony marking the 73rd anniversary of liberation from Japanese colonial rule in 1945, at the National Museum of Korea in Seoul on August 15, 2018. - South Korean President Moon Jae-in said on August 15 his rare visit to Pyongyang next month will be a "bold step" towards ending the decades-old war with the nuclear-armed North. (Photo by Jung Yeon-je / AFP) (Photo credit should read JUNG YEON-JE/AFP/Getty Images)

South Korean President Moon Jae-in (bottom) delivers a speech as characters and letters reading "Peace" are set on the top of stairs during a ceremony marking the 73rd anniversary of liberation from Japanese colonial rule in 1945, at the National Museum of Korea in Seoul on August 15, 2018. - South Korean President Moon Jae-in said on August 15 his rare visit to Pyongyang next month will be a "bold step" towards ending the decades-old war with the nuclear-armed North. (Photo by Jung Yeon-je / AFP)        (Photo credit should read JUNG YEON-JE/AFP/Getty Images)