Even though 'neutrality' - the non-participation of states in international armed conflicts - is a well-known concept of traditional international public law, its value in the 21st century is disputed. Some regard the concept as obsolete, while others still view it as an important contribution to a peaceful world. This book analyzes the contemporary international law concept of neutrality. At the heart lies the question of the present-day value of neutrality for international law. For a deeper understanding of the legal concept, a historical overview of neutrality is followed by a presentation of the different types of neutrality, along with a look at the remaining neutral states of the 21st century. An examination of the sources of neutrality law, its scope of application, as well as the detailed rights and duties of neutral States will answer the question of what it entails nowadays to be neutral in the legal sense. A clear distinction between the law and politics of neutrality is also important. Special attention is given to the traditional problem of exporting war materials, along with the newer developments of private militaries and security companies, as well as cyber warfare. The focus of the book lies on Switzerland as the archetype of a contemporary neutral state. (Series: Dike Law Books) Subject: Public International Law, Neutrality Law, Swiss Law]