In July 2003, on the heels of the American invasion of Iraq, United Nations Secretary-General Kofi Annan held an extraordinary press conference. At it, he wondered aloud whether the institutions and methods we are accustomed to are really adequate to deal with all the stresses of the last couple of years. He warned that we are living through a crisis of the international system. What are the rules? he asked. Four months later he proceeded to appoint a group, the High-Level Panel on Threats, Challenges and Change, to recommend ways of strengthening the United Nations so it can provide collective security for all in the twenty-first century. The High-Level Panel ( Panel ) consisted of former governmental officials and in pursuing it...