Tabla de Contenidos: “…Hamburg -- Strengthening the United Nations' role in preventing deadly conflict / Kofi Annan -- The most deadly threat: nuclear conflict / Sam Nunn -- A U.N. agenda: defending the defenseless and tackling challenges / Ban Ki-moon -- The case for American engagement in the world / Hillary Clinton -- Defending U.S. foreign policy in a post-post-cold war world / Richard N. Haass -- Constructive management of diversity: a strategy for conflict prevention / Francis M. …”