The sixth edition of American National Security has been extensively rewritten to take into account the significant changes in national security policy in the past decade. Thorough revisions reflect a new strategic context and the challenges and opportunities faced by the United States in the early twenty-first century. Highlights include:

• An examination of the current international environment and new factors affecting U.S. national security policy making
• A discussion of the Department of Homeland Security and changes in the intelligence community
• A survey of intelligence and national security, with special focus on security needs post-9/11
• A review of economic security, diplomacy, terrorism, conventional warfare, counterinsurgency, military intervention, and nuclear deterrence in the changed international setting
• An update of security issues in East Asia, South and Southeast Asia, the Middle East, Sub-Saharan Africa, Russia and Central Asia, and Latin America and the Caribbean
• New material on globalization, transnational actors, and human security

Previous editions have been widely used in undergraduate and graduate courses.

Amos A. Jordan has served as Deputy Undersecretary of State and Principal Deputy Assistant Secretary of Defense for International Security Affairs and as a professor at the U.S. Military Academy, West Point. He is president emeritus and served on the Board of Trustees of the Center for Strategic and International Studies (CSIS) in Washington, D.C. William J. Taylor, Jr., is a senior advisor in the International Security Program at CSIS and former director of National Security Studies at the U.S. Military Academy, West Point. Michael J. Meese is a professor and Deputy Head of the Department of Social Sciences at the U.S. Military Academy, West Point. Suzanne C. Nielsen is a professor and the director of the International Relations and National Security Studies Program at the U.S. Military Academy, West Point.