The disintegration of the SFRY took place in the specific international context of the disappearance of the bipolar and the emergence of a multipolar world order. In the process of disintegration of the SFRY, numerous processes of destruction of the old government structure have happened and the establishment of new missing state structures of the former republics that decided for independence took place. The disintegration took place according to ethnic patterns, which led to mass transfers of experts from federal institutions in the new republic. Given that diplomacy as a state function was established at the level of the federation, the newly created states largely built their diplomatic structures using the cadres from the former SFRY diplomacy. The phenomenon of transients from the federal diplomatic structure, as well as their contribution to the creation and development of Croatian diplomacy, has hitherto not been the subject of scientific attention and research in the social sciences in the Republic of Croatia. The research is not aimed at understanding the systemic and structural variables that led to the disintegration of the SFRY, is the creation of new republics and their state functions, but seeks, relying on similar research by military professionals, to identify key reasons that led to individual decisions to leave old and joining the structures of the new state. Given this, the creation and development of Croatian diplomacy is explored through the analysis of the context of the disintegration of the SFRY, and the phenomenon of the transition of diplomats from Yugoslav to Croatian diplomacy, and their contribution to its development.