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.
Jang Song-thaek
Analysts of North Korean politics agreed that Jang's execution was the most significant since purges carried out in the 1950s by Kim Il-Sung, Kim Jong-un's grandfather and North Korea's founder; since 1960, purged top officials have not usually been killed, and the denunciations of purged figures have not typically been so extreme and public. Professor Charles K. Armstrong, an expert on North Korea at Columbia University, stated that "although high-ranking leaders, including members of the Kim family, have been deposed before, we haven't seen anything this public or dramatic since Kim Jong-un's grandfather Kim Il-sung purged his last major rivals in the late 1950s. This seems to indicate the divisions within the Kim regime were more serious than previously thought." Former U.S. National Security Council director for Asian affairs Victor Cha said that the purge and execution of Jang "tells you that everything's not normal ... When you take out Jang, you're not taking out just one person – you're taking out scores if not hundreds of other people in the system. It's got to have some ripple effect."