A dictatorship is a form of government which is characterized by a leader, or a group of leaders, which holds governmental powers with few to no limitations on them. The leader of a dictatorship is called a dictator. Politics in a dictatorship are controlled by the dictator and facilitated through an inner circle of elites that include advisers, generals, and other high-ranking officials. The dictator maintains control by influencing and appeasing the inner circle while repressing any opposition, which may include rival political parties, armed resistance, or disloyal members of the inner circle. Dictatorships can be formed by a military coup that overthrows the previous government through force or by a self-coup in which elected leaders make their rule permanent. Dictatorships are authoritarian or totalitarian and can be classified as military dictatorships, one-party dictatorships, personalist dictatorships, or absolute monarchies.