Cold War My first inclination would be to answer the first question with a clear "YES". But come to think of it, the causes of war really have not changed at all, or at least very little. Rather than changes, there has been a shift in the causes. The cause of war which has dominated the last 50 years was the cause of ideology. However, due to the recent end of the Cold War, this cause of war, has significantly declined and is almost trivial. The causes of war have shifted from mainly ideological ones to economic, ethnic and others. Although these reasons have always played a role as causes of war throughout history