Ricardo Lagos served as president of Chile from 2000 - 2006 and was the first to hold the office since General Pinochet's military coup. As president he vowed not to block attempts to prosecute Pinochet and his popularity was bolstered by enacting social reforms, including the legalization of divorce in 2004.  In early 2007, Lagos became a member of the editorial board of Americas Quarterly, a policy publication focused on relations and development in the Western Hemisphere. Lagos contributes regularly. Since May 2007 he has served as a Special Envoy on Climate Change for the United Nations Secretary-General Ban Ki-moon.

Lagos earned a law degree from the University of Chile in 1960 and then attended Duke University, where he received a PhD in economics in 1966. He returned to Chile and served as director of the University of Chile's School of Political and Administrative Sciences and was subsequently appointed secretary general of the Latin American Faculty of Social Sciences. Following the coup, Lagos lived in the United States and Argentina. He served at the United Nations as consultant and economist in UNESCO and the International Labor Organization. In 1978, he returned to Chile, where he became president of the Democratic Alliance, a coalition of parties opposed to Pinochet. In 1987, Lagos founded the Party for Democracy (Partido por la Democracia). He served as minister of education under the government of President Patricio Aylwin (1990-1994) and as minister of public works under President Eduardo Frei (1994-2000). Elected president in January 2000, Lagos became the first socialist to hold the office since Allende.