김구
He participated in drawing up a draft of the proclamation of the independence of Korea in 1918 while he was studying in Japan, and after 1919, worked for the Provisional Government of the Republic of Korea as the secretary of the provisional government and head of the Korean Independence Party. He also organized the society of policies on current affairs with Kim Gu and Yeo Unhyeong, contributing to establish the theories on diplomacy of the provisional government. In the political scene of liberated Korea, he was one of the right politicians, who stuck to the legitimacy of the Provisional Government of the Republic of Korea. In 1948, he visited Pyongyang to attend the joint conference of leaders of parties and social groups in the entire nation with Kim Gu and Kim Gyusik, which was turned out to be a failure. He abandoned his direction for North-South Korea's cooperation, leading to one-sided establishment of Republic of Korea in favor.