"What makes this book stand out is the range of interrelated topics that it covers, from statelessness, deprivation of citizenship, and multiple citizenship, to more general themes on the acquisition, enjoyment, and loss of citizenship in the migration context. Ultimately, the book is a key contribution to the field of citizenship studies in that it provides readers with a fresh understanding of the right of individuals to acquire citizenship. It also shows us how to navigate the protection gaps that leave individuals at risk of violations of their right to citizenship, through the identification of those rights and obligations that can be derived from the right to citizenship as enshrined in international legal standards."Abdullah Omar Yassan, GLOBALCIT, 2023."In summary, von Rütte’s book not only contributes significantly to the scholarship on citizenship but also invites readers to contemplate the profound implications of this right in our contemporary world. Her meticulous research and persuasive arguments make this book a valuable addition to the discourse surrounding human rights and citizenship for academics and practitioners alike."Monika Plozza, European Journal of Migration and Law, 25 (3), pp. 380-383. "Citizenship (or nationality) remains a slippery concept in our times and this study provides ways of strengthening the right to a nationality and realising effective nationality, especially for persons with a clear nexus with a state/states and yet facing the risk of arbitrary deprivation of nationality."A. Yadav, The Statelessness & Citizenship Review, (2023) 5(2), 245-251.