[2] During World War II, Lacoste escaped German occupation and joined the Free French Forces in North Africa.
In 1982, Pierre Marion was dismissed as Director General of External Security by François Mitterrand.
[7] In 2005, Le Monde published a report on the Rainbow Warrior intended for the Minister of Defense André Giraud in which Lacoste recalls President Mitterrand giving the green light for the sinking.
In 1993, he co-chaired the Centre d'études scientifiques de défense at the University of Paris-Est Marne-la-Vallée where he taught a seminar on "French intelligence culture."
He also created the lesson "Strategic Intelligence, Risk Analysis, Territories", which still exists today.