Following the liberation of Korea in 1945, Lee led a student movement opposing the
joint trusteeship of Korea, becoming the chairman of the in 1946. Following the ratification of the amendment in November 1954,
Political exile On May 16, 1961,
Park Chung Hee,
Kim Jong-pil, and Lee Nak-sun successfully staged a military coup d'etat. Immediately after,
Park Chung Hee sent aides to try and win over key opposition lawmakers including Lee who rejected Park's request for help. Lee was forced to leave politics and went to the United States where he was vocally opposed to the military coup in Korea and studied political science at the
University of Pennsylvania.
Post-political career and civil society leadership 1990 • Director, The Seoul Peace Prize • Member, The Seoul Peace Prize Selection Committee 1993 • Director, Commemorative Committee for "Patriotic Martyr in Yeosoon" 1994~ • Co-chairman, National Council for Freedom and Democracy 1995~ • Advisor, Korea Eligible Senior Voters Federation 1996~ • Chairman, Seoul Peace Prize Cultural Foundation and President, the Seoul Peace Prize Selection Committee • Member, Organizing Committee for the 2002 World Cup • Chairman, Association of Patriotic Societies for National Foundation 1998 • Chairman, Preparatory Committee for Commemorative of the Founding of the Republic of Korea 2005 • 자유민주비상국민회의 대표의장 2007 • Chairman, Parliamentarians' Society of the Republic of Korea 2011~2016 • Chairman, The Elders Group of the Parliamentarians' Society of the Republic of Korea ==Death==