Fear is an inescapable part of how human beings experience reality. The impact of fear becomes particularly evident in a crisis. When a crisis strikes, be it a war, a pandemic, global warming or a financial crisis, leaders are challenged to exercise sound judgement by speaking and acting. This book argues that there are three fears every leader has to know – apocalyptic fear, political fear, and private fear. By appealing to these three fears in an adequate manner, a leader’s appeal to fear may serve a constructive purpose in a crisis.