국가재건최고회의
Park Chung-hee, a Major General in the Republic of Korea Army with decidedly ambiguous political leanings, was heavily influenced by this unfolding intellectual reaction. Park became the leader of a reformist faction within the military that plotted a coup d'etat against the civilian government of the Second Republic on 12 May 1961. The plot was aborted after being leaked, however, the military attempted another coup four days later on 16 May which was successful, dissolving the Second Republic. They proceeded to broadcast a proclamation outlining the policy objectives of the coup, including anti-communism, strengthening of ties with the United States, the elimination of political corruption, the construction of an autonomous national economy, Korean reunification, and the removal of the present generation of politicians. Park and his supporters subsequently established the Military Revolutionary Committee as a military junta government, later renamed the Supreme Council for National Reconstruction. President Yun Posun, who had sided with the coup, was retained in his position as a figurehead. General Chang Do-yong, the Army Chiefs of Staff, was installed as the Chairman of the Supreme Council, while Park became the Vice-Chairman. However, the power struggles within the Supreme Council allowed Park to engineer the gradual transfer of power from Chang to himself. In July, Park officially replaced Chang as Chairman, effectively becoming the "de facto" dictator of Korea.