Sovereignty, in layman's terms, means a state or a governing body has the full right and power to govern itself without any interference from outside sources or bodies. In political theory, sovereignty is a substantive term designating supreme authority over some polity. It is a basic principle underlying the dominant Westphalian model of state foundation.Derived from Latin through French souveraineté, its attainment and retention, in both Chinese and Western culture, has traditionally been associated with certain moral imperatives upon any claimant.