The book explores the current role of nationality from the point of view of international law, reassessing the validity of the 'classical', state-centered, approach to nationality in light of the 'new' role the human being is gradually acquiring within the international legal order. In this framework, the collection assesses the impact of international human rights rules on the international discourse on nationality and explores the significance international (including private international) law attaches to the links individuals may establish with states other than that of nationality. The book weighs the significance of the bond of nationality in the context of regional integration systems, and explores the fields of international law in which nationality still plays a pivotal role, such as diplomatic protection and dispute settlement in international investment law. The collection includes contributions from legal scholars of different nationalities and academic backgrounds, and offers an excellent resource for academics, practitioners and students undertaking advanced studies in international law.