In view of the contemporary challenges and threats, European Union’s efforts in the area of civil and military capacity building are extremely important. As an international organization having a high impact on third countries, the European Union plays a key role in conflict prevention and crisis response. In external governance EU has two sectoral policies at its disposal: the Common Foreign and Security Policy (CFSP) and the Common Security and Defense Policy (CSDP). The CFSP is responsible for resolving conflicts and fostering international understanding using diplomacy and giving respect for international rules. The CSDP is responsible for carrying out civilian and military missions as well as for diffusing rules, which affect, in various respects, the improvement of security management in third countries through their incorporation. By adopting today’s global approach, both military and civilian, to crisis management and continuing to strengthen its capacity for action and analytical tools, the European Union is becoming a major security vector at international level, and its Common Security and Defense Policy expeditionary missions are the tangible proof.