 Comnen spent most of World War I in Switzerland, earning respect at home and abroad for his arguments in favor of nationalism, his publicizing of the Greater Romanian cause, and especially for his support of the Romanian community in Dobruja.During the Paris Peace Conference, he was dispatched to Hungary, proposing political settlements that would have made the Treaty of Trianon more palatable to Hungarian conservatives.Also noted as an eccentric who published poetry, he was often ridiculed for his claim to a Byzantine aristocratic descent from the Komnenos.