1949 – Born on the 2nd of December in Mexico City, Mexico.
1970 – He briefly subscribed to Marxist ideology and he headed Luis Echeverria’s Center for Economic and Social Studies of the Third World.
1972 – He studied law at the National Autonomous University of Mexico, international relations at El Colegio de Mexico.
1977 – He completed a master’s degree in international and public affairs at Harvard University’s Kennedy School of Government.
1994 – He was elected to the Chamber of Deputies, representing the Party of the Democratic Revolution and served for three years.
1997 – He served in the Senate, representing the Green Ecological Party of Mexico for three years.
2000 – He served as the transition team’s advisor on international affairs on the 2nd of July.
2002 – He was appointed by Fox as a Mexico’s permanent representative to the United nations.
2003 – He announced his resignation in writing accusing the President of treason and submission to US interests on the 18th of November.
– He received a honorary degree from Ricardo Palma University (Peru) and hosted a weekly current-affairs show on television.
2005 – He died in a car accident near his summer chalet in Tepoztlan, Morelos, on the 5th of June at the age of 55.