Power vacuum
In political science and political history, the term power vacuum, also known as a power void, is an analogy between a physical vacuum to the political condition "when someone in a place of power, has lost control of something and no one has replaced them." The situation can occur when a government has no identifiable central power or authority. The physical analogy suggests that in a power vacuum, other forces will tend to "rush in" to fill the vacuum as soon as it is created, perhaps in the form of an armed militia or insurgents, military coup, warlord or dictator. The term is also often used in organized crime when a crime family becomes vulnerable to competition.Hereditary or statutory order of succession or effective succession planning are orderly ways to resolve questions of succession to positions of power. When such methods are unavailable, such as in failed dictatorships or civil wars, a power vacuum arises, which prompts a power struggle entailing political competition, violence, or (usually) both.