Arms Control Association: http://www.armscontrol.org/

Committee on Nuclear Policy: http://www.stimson.org/policy/

Federation of American Scientists: http://www.fas.org/

Global Security Institute: http://www.gsinstitute.org/

High Frontier: http://www.highfrontier.org/

Nuclear Age Peace Foundation: http://www.wagingpeace.org/

Nuclear Control Institute: http://www.nci.org/

Physicians for Social Responsibility: http://www.psr.org/

Proposition One Committee: http://prop1.org/

Pugwash (conferences on science and world affairs): http://www.pugwash.org/

Russian American National Security Advisory Council: http://www.ransac.org/new-web-site/index.html

Union of Concerned Scientists: http://www.ucsusa.org/index.html