North Korea
Japan tried to suppress Korean traditions and culture and ran the economy primarily for its own benefit. Korean resistance groups known as Dongnipgun (Liberation Army) operated along the Sino-Korean border, fighting guerrilla warfare against Japanese forces. Some of them took part in allied action in China and parts of South East Asia. One of the guerrilla leaders was the communist Kim Il-sung, who later became the first leader of North Korea.
2018 Winter Olympics
The South Korean President, Moon Jae-in, at the start of the Olympics shook hands with the sister of North Korean leader Kim Jong-un and a prominent figure of the regime, Kim Yo-jong. This marked the first time since the Korean War that a member of the ruling Kim dynasty had visited South Korea. In contrast, U.S. vice president Mike Pence met with Fred Warmbier (father of Otto Warmbier, who had died after being released from captivity in North Korea) and a group of North Korean defectors in Pyeongchang. American officials said that North Korea cancelled a meeting with Pence at the last minute.