This revised Handbook on nationality and statelessness, produced jointly by the InterParliamentary Union and UNHCR, provides a wealth of information on contemporary statelessness issues, developments in international legal doctrine, good practice examples and possible solutions. It also recommends actions that can be taken by parliamentarians, government officials, civil society organizations and others to address the challenges of statelessness. We are confident that it will serve as a useful tool to reduce and ultimately eradicate the problem of statelessness, eliminating its devastating impact on millions of women, men, boys and girls. Anders B. Johnsson Secretary General Inter-Parliamentary Union 4 António Guterres United Nations High Commissioner for Refugees