Regions can get involved in international-relations activity defined as paradiplomacy. It is similar to state diplomacy as it is subject to its law and policy and uses similar tools such as diplomatic protocol, but is not pursued by professional diplomats. Regional paradiplomacy needs to be analysed as a source of new international relationships. Consequently, regions should be perceived as new actors in international relations. The article focuses on the paradiplomacy of Polish regions (voivodships, or województwa) and Croatian counties (Hrvatske županije). The case study discusses the cooperation between the Warmińsko-Mazurskie Voivodship and the Split-Dalmatia County.
Cities are becoming more important actors in the international arena because they have competencies that enable them to conduct foreign activities. This phenomenon is the result of far-reaching processes of globalisation and the pluralisation of actors in international relations. This study presents a map of partnerships between six Croatian and two Slovenian cities and their Chinese and American partners, as well as a description of the thematic areas of such cooperation. Moreover, based on the results of our survey, we indicate similarities and differences in the patterns of cooperation between the cities of the Western Balkans and their foreign partners, referring to the multilevel governance theory.