Military Sector refers to the two-level interplay between the armed offensive capacity and defensive capabilities of states and their perceptions of each other’s intentions. It is about relationships of forceful coercion. Here the referent object can be states.

Political Sector means the regime type of states and their ideologies that provide them with legitimacy and authority. It is related to authority, governing status and recognition. In this sector, the referent object can be national sovereignty or an ideology. 

Economical Sector shows the welfare of the state and its access to natural resources and financial markets. It concerns trade, production, and finance. Its referent object refers to national economies.

Societal Sector relates to national identity, sustainable culture, customs, and religion. It is about relationships of collective identity. The referent object here is collective identities.

Environmental Sector includes the maintenance of the planetary biosphere. It refers to the relationship between human activity and planetary biosphere. Its referent object is species or habitats (Buzan, Waever, and Wilde, 1998: 8)