 Comnen was also taking trips to Brazil, initially as a delegate of Florence city council.In September 1954, he was at Rio de Janeiro, lecturing at the Romanian House on issues of international diplomacy.He resumed his publishing in 1957, with the memoirs of his 1919 trip to Hungary (published by a Romanian group in Madrid) and the historical review "Luci e ombre sull'Europa" ("Lights and Shadows over Europe").