10332 Défi or 10332 Defi (1991 JT1), main belt asteroid discovered in 1991
In March 1968, he was the organizer of a debate on Jean-Jacques Servan-Schreiber’s book Le Défi Américain ("The American Challenge", 1968) at the Hotel Melia in Madrid.
He has contributed music to several films, including Human Traffic and Dogme 95 director Kristian Levring's The Intended, Agathe Clery, Le Defi, HBO's A Number, as well as UK television, theatrical and concert dance productions.
He was a panelist at the 2006 Paris conference "Les démocraties face au défi islamiste" (The democracies in the face of the Islamist challenge) organised by the Center for Security Policy and L’institut pour la Défense de la Démocratie.