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Regan in his book Civil Wars and Foreign Powers (2000) about two thirds of the 138 intrastate conflicts between the end of World War II and 2000 saw international intervention, with the United States intervening in 35 of these conflicts. Most modern civil wars involve intervention by outside powers. The term is a calque of Latin bellum civile which was used to refer to the various civil wars of the Roman Republic in the 1st century BC. 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.

The destruction wrought on Granollers after a raid by German aircraft on during the Spanish Civil War.Ī civil war, also known as an intrastate war in polemology, is a war between organized groups within the same state (or country).
