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INCHEON, SOUTH KOREA - OCTOBER 04: South Korean unification minister Ryoo Kihl-Jae (R) shakes hands with Hwang Pyong-So (L) vice chairman of North Korea's National Defense Commission on October 4, 2014 in Incheon, South Korea. The North Korean delegation, including Hwang Pyong-So, who is thought to be the country's No.2 after Kim Jong-Un, made a surprise visit to South Korea to attend the closing ceremony of the Asian Games. (Photo by Chung Sung-Jun/Getty Images)
INCHEON, SOUTH KOREA - OCTOBER 04: South Korean unification minister Ryoo Kihl-Jae (R) shakes hands with Hwang Pyong-So (L) vice chairman of North Korea's National Defense Commission on October 4, 2014 in Incheon, South Korea. The North Korean delegation, including Hwang Pyong-So, who is thought to be the country's No.2 after Kim Jong-Un, made a surprise visit to South Korea to attend the closing ceremony of the Asian Games. (Photo by Chung Sung-Jun/Getty Images)

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    North Korean leaders visit South Korea

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North Korean leaders visit South Korea

With Kim Jong Un out of sight for a month, three North Korean officials went to South Korea for a last-minute visit.

North Korean leaders visit South Korea

With Kim Jong Un out of sight for a month, three North Korean officials went to South Korea for a last-minute visit.