François Heisbourg est président de l’International Institute for Strategic Studies (IISS), basé à Londres, et du Centre de politique de sécurité de Genève (GCSP).
Il est conseiller spécial à la Fondation pour la Recherche Stratégique (FRS).
Il a été membre du Centre d'Analyse et de Prévision du ministère des affaires étrangères (1978-79), premier secrétaire à la représentation permanente de la France à l’ONU (1979-1981.
Il a fait partie du 'groupe des personnalités' chargé par la Commission européenne de créer le programme européen de recherche de sécurité (PERS), de la Commission Internationale des Balkans, du comité de pilotage du Livre Blanc gouvernemental 'La France face au terrorisme', de la Commission du Livre Blanc sur la Défense et la Sécurité Nationale, de la Commission Internationale sur la non-prolifération et le désarmement nucléaires (ICNND).
Il est officier dans l'ordre de la Légion d'Honneur.
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