Olivier Piton est avocat spécialisé en droit public français, européen et américain. Il a collaboré auprès de trois ambassadeurs de France aux Etats-Unis sur les questions liées aux affaires publiques et aux relations gouvernementales. Il a créé et dirigé la cellule de stratégie d’influence de l’ambassade de France à Washington DC de 2005 à 2010. Il est le président de la Commission des Lois à l’Assemblée des Français de l’Etranger. Il est l'auteur de La nouvelle révolution américaine : la présidentielle américaine à la lumière de l'histoire (Plon, mai 2016).
Journaliste, écrivain et théoricien de l'écologisme, Dominique Simonnet est l'auteur de nombreux essais et romans. Ancien rédacteur en chef de l'Express, il a écrit La Plus Belle histoire du monde, en 1996, longue conversation en forme de récit avec Hubert Reeves, Joël de Rosnay et Yves Coppens, ouvrage vendu en France à plus de 300 000 exemplaires et traduit dans une trentaine de pays. Avec Nicolas Bacharan, il a également signé deux essais sur les Etats-Unis aux Editions Perrin: "11 septembre, le jour du chaos", et "Le guide des élections américaines".
Arnaud Castaignet est consultant dans une agence de communication, après avoir travaillé en tant que journaliste économique pour une revue britannique.
Spécialiste des questions énergétiques et géopolitiques, il collabore toujours avec la presse étrangère sur des questions de relations internationales.
Il tient un blog sur consacré à la politique internationale et aux affaires militaires : http://surlefront.blogs.nouvelobs.com/
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