Abstract
The disappearance of bipolarity causes essential mutations in the international security environment, which highlights the need to rethink the defence concept. The analysis of new risks and threats to international security has led to a new perception of it and has imposed a new orientation in the field of defence. The formation of new partnerships and alliances greatly reduces the likelihood of a conflict between members, which contributes to supporting the common interest of countries to maintain and strengthen international peace and security. All countries of the world are, in principle, members of at least one regional or intergovernmental organization. Although traditionally regional organizations have been set up on the basis of political, economical or environmental objectives, they have also entered security in recent decades and have started to develop their own capabilities to prevent conflicts and support peacekeeping operations or post-conflict construction of states