bild

Former Soviet President Mikhail Gorbachev speaks to students and faculty at the Kennedy School of Government at Harvard University Tuesday, Dec. 4, 2007, in Cambridge, Mass. Gorbachev said he believes the world had missed opportunities to reduce the threat of nuclear weapons, as he spoke on the 20th anniversary of the Intermediate-Range Nuclear Forces Treaty that he signed with President Ronald Regan in Dec. 1987. (AP Photo/Josh Reynolds)