Jean Sylvestre Mongrenier est chercheur à l’Institut français de géopolitique (Université de Paris VIII) et chercheur associé à l’Institut Thomas More.
Il est notamment l'auteur de La Russie menace-t-elle l'Occident ? (éditions Choiseul, 2009).
Jean-Eric Branaa est spécialiste des Etats-Unis et maître de conférences à l’université Assas-Paris II. Il est chercheur au centre Thucydide. Son dernier livre s'intitule Géopolitique des Etats-Unis (Puf, 2022).
Il est également l'auteur de Hillary, une présidente des Etats-Unis (Eyrolles, 2015), Qui veut la peau du Parti républicain ? L’incroyable Donald Trump (Passy, 2016), Trumpland, portrait d'une Amérique divisée (Privat, 2017), 1968: Quand l'Amérique gronde (Privat, 2018), Et s’il gagnait encore ? (VA éditions, 2018), Joe Biden : le 3e mandat de Barack Obama (VA éditions, 2019) et la biographie de Joe Biden (Nouveau Monde, 2020).
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