He studied in the former Soviet Union, earning a Master of Arts degree (Russian Philology and Literature, Russian Language and Literature Teacher) and a degree of Russian-French translator in 1990 from the Patrice Lumumba University /People's Friendship University in Moscow (he is listed among the 20 Notable Alumni since 1960) Peoples' Friendship University of Russia; and in France, obtaining a Diplôme d'Etudes Approfondies, DEA, in Paris National Institute for Oriental Languages and Civilizations (INALCO-Langues O) in 1991.
[3] In 1996, he published a seminal biography of the Russian military leader Abram Petrovich Gannibal.
[3] The Russian translation coincided with the 1999 bicentennial anniversary of the birth of the writer Alexander Pushkin, Gannibal's great-grandson.
Gnammankou's research established that Gannibal was born in Logone-Birni, Central Africa, in an area bordering Lake Chad, nowadays Cameroon.
In 2000, a documentary about Gannibal shown on Russian television included scenes shot in Logone, as well as an interview with Mr.