This book looks at the concept of ‘terrorism’ and its primary aim of creating a climate of fear. Any discussion of terrorism has to firstly define its terms: what do we mean by terrorism and how does it manifest itself in contemporary accounts and moreover, what is the difference between legitimate military action and one based on terror? The definitions of terrorism are complex and depend, to a very large extent, on who one is asking. A government defence adviser would, for instance, have a markedly different notion of what constitutes terrorism than a member of a paramilitary organisation and an ordinary member of the public might have a notion based somewhere on the interaction between these two depending on their socio-cultural background. This is primarily the main reason why the term has not been universally accepted by all scholars or academics. There are many reasons why political groups attempt to bring about radical change through terrorism. People are often frustrated with their position in society. They may in some way feel persecuted or oppressed because of their race, religion, or they feel exploited by a government. Any group that uses terrorist actions have very complex and powerful reasons to engage in those activities. The usual experience of violence by a stronger party has historically turned victims into terrorists. State terror very often breeds collective terror. Because ‘terrorism’ is a word that has been used so much and so loosely that it has lost a clear meaning. It can be argued that terrorists are not born, but created as issues of today develop into the conflicts of tomorrow.