This book provides an eclectic and meta-analytic study on the factors affecting military leadership and its components, taking into account both current and future security paradigms. The contemporary security environment is characterized by an increase in the number of wars, and more human-induced problems than ever before. The first duty of armies today is generally the establishment of security. Today’s battles are carried out in a vague and flexible warfare environment, which can be transformed rapidly. For this reason, military leaders need to be more versatile, with rapid decision-making capacities. In order to realize their duties, they have to focus more on the quality of their military leadership, which is critical to the establishment of secure and peaceful environments. Today, high-level army commanders have to behave more like diplomats, intellectuals and academics than ever before.