Which government has a great deal of power but does not have political authority?

A government that has a great deal of power but lacks political authority is often described as a de facto government. This type of government exercises control over a territory or population without being recognized as legitimate by other states or international bodies. Examples include military juntas or revolutionary groups that govern without formal legal recognition. Their power may be substantial, but it is often seen as lacking legitimacy due to the absence of democratic processes or international support.