 Each component of this definition highlights an important aspect of the concept. First, a holder of sovereignty possesses authority. That is to say, the person or entity does not merely wield coercive power, defined as A’s ability to cause B to do what he would otherwise not do. Authority is rather what philosopher R.P. Wolff proposed: “the right to command and correlatively the right to be obeyed” (Wolff, 1990, 20). What is most important here is the term “right,” connoting legitimacy. A holder of sovereignty derives authority from some mutually acknowledged source of legitimacy — natural law, a divine mandate, hereditary law, a constitution, even international law. In the contemporary era, some body of law is ubiquitously the source of sovereignty.