The use of force, whether by the regular armed forces or by guerrilla, terrorist or other subversive tactics, may be used initially to achieve revolution and may continue to be used in order to suppress the populace and certain key institutions or industries. Such violent means, when used to achieve social, political, economic, cultural or ideological revolution, may result in death, mutilation, massacre, internment without trial, torture, civil or guerrilla war, or social and national disintegration culminating in foreign intervention. It may also lead to repression. This in turn may cause social or national disintegration, counter-revolution and foreign intervention, or civil and guerrilla warfare.