There are approximately 1,500 think tanks in the United States. The list below, far from inclusive, is intended to give a representative sampling or cross section of think tanks that deal with U.S. foreign policy issues. For a more comprehensive view, use the last two Internet references or URL's, which provide many more links to think tanks. Please note that the U.S. Department of State assumes no responsibility for the content and availability of the resources listed below; such responsibility resides solely with the providers.

American Enterprise Institute
http://www.aei.org/

Aspen Institute
http://www.aspeninst.org/

Atlantic Council of the United States
http://www.acus.org/

Brookings Institution: Foreign Policy Studies
http://www.brook.edu/dybdocroot/fp/fp_hp.htm

Carnegie Endowment for International Peace
http://www.ceip.org/

Cato Institute: Foreign Policy
http://www.cato.org/foreignpolicy/index.html

Center for Strategic and International Studies
http://www.csis.org/

Council on Foreign Relations
http://www.cfr.org/

Foreign Policy Research Institute
http://www.fpri.org/

Heritage Foundation
http://www.heritage.org/

Hoover Institution on War, Revolution and Peace, Stanford University
http://www-hoover.stanford.edu/

Hudson Institute
http://www.hudson.org/

Institute for Defense Analyses
http://www.ida.org/

Institute for Foreign Policy Analysis
http://www.ifpa.org/

Institute for Multi-Track Diplomacy
http://www.imtd.org/

John F. Kennedy School of Government, Harvard University
http://www.ksg.harvard.edu/kennedy.shtml

National Defense University
http://www.ndu.edu/

New America Foundation
http://www.newamerica.net/

RAND: Foreign and Security Policy
http://www.rand.org/interpol_area/forsec/

Stimson Center
http://www.stimson.org/

U.S. Institute of Peace
http://www.usip.org/

Woodrow Wilson International Center for Scholars
http://wwics.si.edu/

Lehman Social Sciences Library, Columbia University
http://www.columbia.edu/cu/lweb/indiv/lehman/guides/ttanks.html

University of North Carolina
http://www.ibiblio.org/ucis/Nonprofit.html