Necessity and Aequirements of Synergy Urban diplomacy with Public diplomacy in Cultural and Economic Interaction in Foreign policy

Abstract Understanding today's world situation demands that the national interests should not be defined just in terms of formal diplomacy and also some factors such as urban diplomacy, public diplomacy, soft power and historical, cultural and economic identity should be consider as other aspects of promoting national interest and advancing foreign policy. Therefore, based on a descriptive-analytical method, we seek to answer this key question that how urban diplomacy and public diplomacy can play a parallel and complementary role in foreign policy. In response it seems that urban diplomacy in a parallel way could have the complementary and effective role on public diplomacy’s function based on the development and improvement of relations between nations and citizens, connection with key people and establishment of strategic relations in foreign policy with an emphasis on the tourism industry and engagement with sister cities and also NGO’s, cultural interactions and expanding values and norms. So In this parallel move, as cities in an intangible competition can improve their dignity and status from national to regional or international levels, platform for the development of diplomacy (state-nation) would develop on the operational stage. Thus, it will provide tourist attractions, investors, economic prosperity and information transfer. Key words: Public diplomacy, urban diplomacy, foreign policy, national interest