Security regions can be regarded as miniature systems of international politics where all International Relations theories can be applied such as alliance theory, polarity, and balance of power etc. A regional security complex is is based on four components as follows:
1. Regional boundaries, which differentiate itself from its neighbors.
2. Regional anarchical system, which consists of two or three independents states
3. Power differences among countries in the region,
4. The patterns of amity and enmity (Buzan and Waever, 2003: 53).