Development of international business has reduced the gap between countries and induced the collaboration of individuals with different cultural backgrounds. People across the globe are united trough business unities to achieve common goals. Cross-cultural management has become one of the pressing topics in last decades, but still it is causing cooperation failures. This article presents main mail stones in cross cultural research development, economical impact of intercultural barriers and suggestions for harmonization of cross-cultural barriers. The aim of the paper is to analyse and evaluate cross-cultural barriers in international business environment based on example of Latvia and Norway in order to develop suggestions for harmonization of intercultural barriers. Based on objective of this paper, authors are planning to develop practical cross-cultural barriers harmonizing instrument for international organizations, which can provide them with higher succeeding potential in intercultural relations. Existing researches mostly are focusing on culturally mixed projects, extern intercultural barriers, etc. In this research authors are focusing on organization's intern international relations, like relations between mother and daughter or sister or other related units in management level. Authors are seeking answers to questions like: How culture affects leadership style and corporations between leaders? How the culture impacts international relations of organization units? How leadership style affects employee's international cooperation skills? What is the economical impact of culturally miss leaded cooperation?