Civil War

 A civil war is a war between organized groups within the same nation state or republic, or, less commonly, between two countries created from a formerly united nation state.

The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government policies.

Civil wars since the end of World War II have lasted on average just over four years, a dramatic rise from the one-and-a-half year average of the 1900-1944 period. While the rate of emergence of new civil wars has been relatively steady since the mid-19th century, the increasing length of those wars resulted in increasing numbers of wars ongoing at any one time. For example, there were no more than five civil wars underway simultaneously in the first half of the 20th century, while over 20 concurrent civil wars were occurring at the end of the Cold War, before a significant decrease as conflicts strongly associated with the superpower rivalry came to an end. Since 1945, civil wars have resulted in the deaths of over 25 million people, as well as the forced displacement of millions more. Civil wars have further resulted in economic collapse; Burma, Uganda and Angola are examples of nations that were considered to have promising futures before being engulfed in civil wars.

Definition

James Fearon, a scholar of civil wars at Stanford University, defines a civil war as "a violent conflict within a country fought by organized groups that aim to take power at the center or in a region, or to change government policies". The Correlates of War, a dataset widely used by scholars of conflict, classifies civil wars as having over 1000 war-related casualties per year of conflict. This rate is a small fraction of the millions killed in the Second Sudanese Civil War and Cambodian Civil War, for example, but excludes several highly publicized conflicts, such as The Troubles