Wikipedia list of failed states has been updated and Nigeria is now one of the countries on the list.
The free web-based encyclopedia project which contains information on a wide variety of subjects, described a failed state as a political body that has disintegrated to a point where basic conditions and responsibilities of a sovereign government no longer function properly.
It further added that 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 countries listed as a failed state by Wikipedia include; Syria, Somalia, Myanmar, Nigeria, Iraq, Yemen, Turkey, Democratic Republic of Congo, Central African Republic, Rwanda, Liberia, Yugoslavia, Lebanon, Afghanistan, Sudan, South Sudan.