A failed state is a political body that has disintegrated to a point where basic conditions and responsibilities of a sovereign government no longer function properly (see also fragile state and state collapse). A state can also fail if the government loses its legitimacy even if it is performing its functions properly. For a stable state it is necessary for the government to enjoy both effectiveness and legitimacy. Likewise, when a nation weakens and its standard of living declines, it introduces the possibility of total governmental collapse.
Some examples include Somalia and Yemen.