The European general public has had a significant role in the last twenty-five years in shaping the European security picture. Of crucial importance for the legitimacy of the European national security system, and its central component of military organisation, is the ability of the military to fulfil public expectations and demands. Using opinion surveys as means of offering a consultant role to the general public, states are able to plan changes in security policy. For example, when security turmoil arose, as in the cases of European missile deployment, the socialist world breaking up, the cessation of the Warsaw treaty, and war in the territories of the former Yugoslavia, the European general public has participated in reshaping, via such surveys, the security picture of Europe. In each of these cases, the views of the general public have created the limits of acceptable policies. However, it should be noted that political interests, rather than the growth of theoretically grounded research, have supplied the main underlying motives for the growth in public opinion survey research which we have seen in recent years. Thus, opinion research regarding war in the former Yugoslavia is thoroughly embedded in polemical debates and controversy, and is not simply concerned with understanding the situations or contributing to general knowledge about public opinion in times of extreme crisis. Alternatively, if the purpose of such research were to contribute to general knowledge, it might be more focused on such matters as how war effects the replacement of civil security values with military ones in a particular political culture. The military component of a national security system legitimates itself most successfully when a potential enemy exists. Western Europe lost its traditional enemy after the socialist world of Central and Eastern Europe collapsed, which has led to an identity crisis in security policy and a lowering of defence expenditures. In the absence of a clear enemy, most of these countries have brought about significant military transformations, one important manifestation of which has been the move from conscriptive to professional armies.