He graduated from the Sorbonne (1968).
Teacher at the National Institute of Oriental Languages and Civilizations (Paris, 1975-2002). Head of the Department of Oriental and Slavic Languages at the University of Nice (since 2003). The creator and head of the publishing house "Albatross" (since 1980). Founder and president of the Association for the Preservation of Russian Cultural Heritage in France (since 1991). In September 2003, Guerra visited Voronezh, spoke at the Faculty of Philology of Voronezh State University and the Scientific Library of Voronezh State University, visited the Khrenovskaya stud farm (Bobrovsky district, Voronezh region).