Norman A. Graebner is Randolph P. Compton Professor of History and Public Affairs Emeritus, the University of Virginia and is the recipient of the university's highest honor, the Thomas Jefferson Award. He is an internationally acknowledged authority on United States and American diplomacy. He was a Harold Vyvyan Harmsworth Professor of American History at Oxford University and a Thomas Jefferson Visiting Scholar at Downing College, Cambridge. He is the author, co-author, or editor of more than thirty books and some 130 articles, essays, and book chapters, including Empire on the Pacific: A Study in American Continental Expansion (1955, 1983), Foundations of American Foreign Policy: A Realist Appraisal from Franklin to McKinley (1985), and America as a World Power: A Realist Appraisal from Wilson to Reagan (1984). Richard Dean Burns is Professor Emeritus and former chair of the History Department at California State University, Los Angeles. He has authored and edited more than a dozen books and two dozen articles covering arms control, diplomatic history, international law, and American foreign policy. Most recently, he co-authored The Quest for Missile Defense, 1944–2003 (2004). His other publications include an edited three-volume, Encyclopedia of Arms Control and Disarmament (1993), a co-edited three-volume Encyclopedia of American Foreign Policy, Second Edition (2002), an edited three-volume Chronological History of United States Foreign Relations (2002), and Cold War Chronology, 1917–1992 (2005). Joseph M. Siracusa is Professor of International Diplomacy and Director of Global Studies in the School of Global Studies, Social Science and Planning, at the Royal Melbourne Institute of Technology where he is a specialist in nuclear politics and global security. A native of Chicago and long-time resident of Australia, he is internationally known for his writings on nuclear history, diplomacy, and presidential politics. He is also a frequent political affairs commentator in the Australian media, including ABC Radio National. His books include A History of United States Foreign Policy, Depression to Cold War: A History of America from Herbert Hoover to Ronald Reagan (with David G. Coleman), Presidential Profiles: The Kennedy Years, and Real-World Nuclear Deterrence: The Making of International Strategy (with David G. Coleman).