Comparative Theories and Causes of War

War is a strategic activity of attacking using weapons and new technologies for resolving internal and/or international disputes or conflicts between two or more nations; between ethnic, social, and religious (organized) groups; etc., to cope with environmental threats and take advantage of important opportunities, generating at the same time a reduction of the freedom of other societies/groups and causing deaths, injured people, and/or social, economic, cultural, and/or ethnic damages.