On April 7, 2023, in the Ceremonial Hall of the Faculty of Philosophy in Belgrade, the doctoral dissertation on the topic “Yugoslav-Bulgarian relations 1929-1941” was defended by Miloš Žikić, an associate of the Institute. In the commission for defense were Academician Ljubodrag Dimić, prof. Dr. Mira Radojević, Dr. Bojan Dimitrijević, Prof. Dr. Vladan Virijević and Doc Dr. Srđan Mićić. The mentor for the preparation of the dissertation was prof. Dr. Aleksandar Životić.